Add dismiss Searchbar with Esc key

cloud/static/assets/js/layout.min.js

@@ -0,0 +1,55 @@
+/* Variables
+   ================================================================== */
+var searchToggleStatus = false
+
+/* Selectors
+   ================================================================== */
+var searchButton = document.querySelector('#searchButton'),
+    searchCloseButton = document.querySelector('#searchCloseButton'),
+    searchNav = document.querySelector('#searchNav'),
+    searchNavInput = document.querySelector('#searchNav input'),
+    navbarNav = document.querySelector('#navbarNav'),
+    profileMenu = document.querySelector('#navbarNav .navbar-nav').lastElementChild
+
+/* Interactions
+   ================================================================== */
+searchButton.addEventListener('click', showSearch)
+searchCloseButton.addEventListener('click', closeSearch)
+
+
+/* Functions
+   ================================================================== */
+function showSearch() {
+  searchToggleStatus = true
+  searchNav.classList.remove('hidden')
+  searchNavInput.focus()
+  navbarNav.classList.add('hidden')
+  profileMenu.classList.add('visible')
+  // $('#search-overlay').addClass('visible')
+  // if (searchToggleStatus == true) {
+  //   // $(document.body).click(function() {
+  //     // console.log('detect click outside');      
+  //     //   searchToggleStatus = false
+  //     // })
+  //     console.log(searchToggleStatus);
+  //     console.log('detect click outside');      
+  //     searchToggleStatus = false
+  //     console.log(searchToggleStatus);
+  // } else {
+  //   console.log(searchToggleStatus);
+  //   console.log('not detecting clicks');
+    
+  // }
+    // $(document.body).click(function () {
+    //   console.log('detected click outside');
+    //   searchToggleStatus == false
+    // }) else {
+    // }
+}
+
+function closeSearch() {
+  searchNav.classList.add('hidden')
+  navbarNav.classList.remove('hidden')
+  profileMenu.classList.remove('visible')
+  // $('#search-overlay').removeClass('active')
+}

gulpfile.js

@@ -1,128 +1,113 @@
-var argv         = require('minimist')(process.argv.slice(2));
-var autoprefixer = require('gulp-autoprefixer');
-var chmod        = require('gulp-chmod');
-var concat       = require('gulp-concat');
-var git          = require('gulp-git');
-var gulp         = require('gulp');
-var gulpif       = require('gulp-if');
-var pug          = require('gulp-pug');
-var livereload   = require('gulp-livereload');
-var plumber      = require('gulp-plumber');
-var rename       = require('gulp-rename');
-var sass         = require('gulp-sass');
-var sourcemaps   = require('gulp-sourcemaps');
-var uglify       = require('gulp-uglify');
-var cache        = require('gulp-cached');
+let argv         = require('minimist')(process.argv.slice(2));
+let autoprefixer = require('gulp-autoprefixer');
+let cache        = require('gulp-cached');
+let concat       = require('gulp-concat');
+let gulp         = require('gulp');
+let gulpif       = require('gulp-if');
+let pug          = require('gulp-pug');
+let livereload   = require('gulp-livereload');
+let plumber      = require('gulp-plumber');
+let rename       = require('gulp-rename');
+let sass         = require('gulp-sass');
+let sourcemaps   = require('gulp-sourcemaps');
+let uglify       = require('gulp-uglify');
 
-var enabled = {
-    uglify: argv.production,
-    maps: argv.production,
-    failCheck: !argv.production,
-    prettyPug: !argv.production,
-    cachify: !argv.production,
-    cleanup: argv.production,
+let enabled = {
+	failCheck: !argv.production,
+	maps: argv.production,
+	prettyPug: !argv.production,
+	uglify: argv.production
 };
 
-var destination = {
-    css: 'cloud/static/assets/css',
-    pug: 'cloud/templates',
-    js: 'cloud/static/assets/js',
-}
-
+let destination = {
+	css: 'cloud/static/assets/css',
+	pug: 'cloud/templates',
+	js: 'cloud/static/assets/js'
+};
 
 /* CSS */
-gulp.task('styles', function() {
-    gulp.src('src/styles/**/*.sass')
-        .pipe(gulpif(enabled.failCheck, plumber()))
-        .pipe(gulpif(enabled.maps, sourcemaps.init()))
-        .pipe(sass({
-            outputStyle: 'compressed'}
-            ))
-        .pipe(autoprefixer("last 3 versions"))
-        .pipe(gulpif(enabled.maps, sourcemaps.write(".")))
-        .pipe(gulp.dest(destination.css))
-        .pipe(gulpif(argv.livereload, livereload()));
+gulp.task('styles', function(done) {
+	gulp
+		.src('src/styles/**/*.sass')
+		.pipe(gulpif(enabled.failCheck, plumber()))
+		.pipe(gulpif(enabled.maps, sourcemaps.init()))
+		.pipe(sass({outputStyle: 'compressed'}))
+		.pipe(autoprefixer("last 3 versions"))
+		.pipe(gulpif(enabled.maps, sourcemaps.write(".")))
+		.pipe(gulp.dest(destination.css))
+		.pipe(gulpif(argv.livereload, livereload()));
+	done();
 });
 
 
 /* Templates - Pug */
-gulp.task('templates', function() {
-    gulp.src('src/templates/**/*.pug')
-        .pipe(gulpif(enabled.failCheck, plumber()))
-        .pipe(gulpif(enabled.cachify, cache('templating')))
-        .pipe(pug({
-            pretty: enabled.prettyPug
-        }))
-        .pipe(gulp.dest(destination.pug))
-        .pipe(gulpif(argv.livereload, livereload()));
-    // TODO(venomgfx): please check why 'gulp watch' doesn't pick up on .txt changes.
-    gulp.src('src/templates/**/*.txt')
-        .pipe(gulpif(enabled.failCheck, plumber()))
-        .pipe(gulpif(enabled.cachify, cache('templating')))
-        .pipe(gulp.dest(destination.pug))
-        .pipe(gulpif(argv.livereload, livereload()));
+gulp.task('templates', function(done) {
+	gulp.src('src/templates/**/*.pug')
+		.pipe(gulpif(enabled.failCheck, plumber()))
+		.pipe(cache('templating'))
+		.pipe(pug({
+				pretty: enabled.prettyPug
+		}))
+		.pipe(gulp.dest(destination.pug))
+		.pipe(gulpif(argv.livereload, livereload()));
+	done();
 });
 
 
-/* Individual Uglified Scripts */
-gulp.task('scripts', function() {
-    gulp.src('src/scripts/*.js')
-        .pipe(gulpif(enabled.failCheck, plumber()))
-        .pipe(gulpif(enabled.cachify, cache('scripting')))
-        .pipe(gulpif(enabled.maps, sourcemaps.init()))
-        .pipe(gulpif(enabled.uglify, uglify()))
-        .pipe(rename({suffix: '.min'}))
-        .pipe(gulpif(enabled.maps, sourcemaps.write(".")))
-        .pipe(chmod(644))
-        .pipe(gulp.dest(destination.js))
-        .pipe(gulpif(argv.livereload, livereload()));
+/* Individually uglified scripts */
+gulp.task('scripts', function(done) {
+	gulp.src('src/scripts/*.js')
+		.pipe(gulpif(enabled.failCheck, plumber()))
+		.pipe(cache('scripting'))
+		.pipe(gulpif(enabled.maps, sourcemaps.init()))
+		.pipe(gulpif(enabled.uglify, uglify()))
+		.pipe(rename({suffix: '.min'}))
+		.pipe(gulpif(enabled.maps, sourcemaps.write(".")))
+		.pipe(gulp.dest(destination.js))
+		.pipe(gulpif(argv.livereload, livereload()));
+	done();
 });
 
 
 /* Collection of scripts in src/scripts/tutti/ to merge into tutti.min.js */
 /* Since it's always loaded, it's only for functions that we want site-wide */
-gulp.task('scripts_concat_tutti', function() {
-    gulp.src('src/scripts/tutti/**/*.js')
-        .pipe(gulpif(enabled.failCheck, plumber()))
-        .pipe(gulpif(enabled.maps, sourcemaps.init()))
-        .pipe(concat("tutti.min.js"))
-        .pipe(gulpif(enabled.uglify, uglify()))
-        .pipe(gulpif(enabled.maps, sourcemaps.write(".")))
-        .pipe(chmod(644))
-        .pipe(gulp.dest(destination.js))
-        .pipe(gulpif(argv.livereload, livereload()));
+gulp.task('scripts_tutti', function(done) {
+	gulp.src('src/scripts/tutti/**/*.js')
+		.pipe(gulpif(enabled.failCheck, plumber()))
+		.pipe(gulpif(enabled.maps, sourcemaps.init()))
+		.pipe(concat("tutti.min.js"))
+		.pipe(gulpif(enabled.uglify, uglify()))
+		.pipe(gulpif(enabled.maps, sourcemaps.write(".")))
+		.pipe(gulp.dest(destination.js))
+		.pipe(gulpif(argv.livereload, livereload()));
+	done();
 });
 
 
+/* Simply move these vendor scripts from node_modules  */
+gulp.task('scripts_vendor', function(done) {
+	let toMove = [
+		'node_modules/photoswipe/dist/photoswipe.min.js'
+	];
+	gulp.src(toMove)
+		.pipe(gulp.dest(destination.js));
+	done();
+});
+
 
 // While developing, run 'gulp watch'
-gulp.task('watch',function() {
-    // Only listen for live reloads if ran with --livereload
-    if (argv.livereload){
-        livereload.listen();
-    }
-
-    gulp.watch('src/styles/**/*.sass',['styles']);
-    gulp.watch('src/templates/**/*.pug',['templates']);
-    gulp.watch('src/scripts/*.js',['scripts']);
-    gulp.watch('src/scripts/tutti/**/*.js',['scripts_concat_tutti']);
-});
-
-// Erases all generated files in output directories.
-gulp.task('cleanup', function() {
-    var paths = [];
-    for (attr in destination) {
-        paths.push(destination[attr]);
-    }
-
-    git.clean({ args: '-f -X ' + paths.join(' ') }, function (err) {
-        if(err) throw err;
-    });
+gulp.task('watch', function(done) {
+	// Only reload the pages if we run with --livereload
+	if (argv.livereload){
+		livereload.listen();
+	}
 
+	gulp.watch('src/styles/**/*.sass', gulp.series('styles'));
+	gulp.watch('src/templates/**/*.pug', gulp.series('templates'));
+	gulp.watch('src/scripts/*.js', gulp.series('scripts'));
+	gulp.watch('src/scripts/tutti/*.js', gulp.series('scripts_tutti'));
 });
 
 
 // Run 'gulp' to build everything at once
-var tasks = [];
-if (enabled.cleanup) tasks.push('cleanup');
-gulp.task('default', tasks.concat(['styles', 'templates', 'scripts', 'scripts_concat_tutti']));
+gulp.task('default', gulp.series('styles', 'templates', 'scripts', 'scripts_tutti', 'scripts_vendor'));

package.json

@@ -7,21 +7,26 @@
 		"url": "git://git.blender.org/blender-cloud.git"
 	},
 	"devDependencies": {
-		"gulp": "~3.9.1",
-		"gulp-autoprefixer": "~2.3.1",
-		"gulp-cached": "~1.1.0",
-		"gulp-chmod": "~1.3.0",
-		"gulp-concat": "~2.6.0",
-		"gulp-if": "^2.0.1",
-		"gulp-git": "~2.4.2",
-		"gulp-pug": "~3.2.0",
-		"gulp-jade": "~1.1.0",
+		"gulp": "^4.0.0",
+		"gulp-autoprefixer": "~5.0.0",
+		"gulp-cached": "~1.1.1",
+		"gulp-chmod": "~2.0.0",
+		"gulp-concat": "~2.6.1",
+		"gulp-git": "~2.7.0",
+		"gulp-if": "^2.0.2",
 		"gulp-livereload": "~3.8.1",
-		"gulp-plumber": "~1.1.0",
-		"gulp-rename": "~1.2.2",
-		"gulp-sass": "~2.3.1",
-		"gulp-sourcemaps": "~1.6.0",
-		"gulp-uglify": "~1.5.3",
+		"gulp-plumber": "~1.2.0",
+		"gulp-pug": "~4.0.1",
+		"gulp-rename": "~1.3.0",
+		"gulp-sass": "~4.0.1",
+		"gulp-sourcemaps": "~2.6.4",
+		"gulp-uglify": "~3.0.0",
 		"minimist": "^1.2.0"
+	},
+	"dependencies": {
+		"bootstrap": "^4.1.2",
+		"jquery": "^3.3.1",
+		"popper.js": "^1.14.3",
+		"photoswipe": "^4.1.2"
 	}
 }

src/scripts/layout.js

@@ -0,0 +1,42 @@
+/* Selectors
+   ================================================================== */
+var searchButton = document.querySelector('#searchButton'),
+    searchCloseButton = document.querySelector('#searchCloseButton'),
+    searchNav = document.querySelector('#searchNav'),
+    searchNavInput = document.querySelector('#searchNav input'),
+    navbarNav = document.querySelector('#navbarNav'),
+    profileMenu = document.querySelector('#navbarNav .navbar-nav').lastElementChild
+
+
+/* Interactions
+   ================================================================== */
+searchButton.addEventListener('click', showSearch)
+searchCloseButton.addEventListener('click', closeSearch)
+searchNavInput.onblur = function() {
+  closeSearch()
+}
+
+
+/* Functions
+   ================================================================== */
+function showSearch() {
+  searchToggleStatus = true
+  searchNav.classList.remove('hidden')
+  searchNavInput.focus()
+  navbarNav.classList.add('hidden')
+  profileMenu.classList.add('visible')
+  document.addEventListener('keyup', onPressEscCloseSearch)
+}
+
+function closeSearch() {
+  searchNav.classList.add('hidden')
+  navbarNav.classList.remove('hidden')
+  profileMenu.classList.remove('visible')
+  document.removeEventListener('keyup', onPressEscCloseSearch)
+}
+
+function onPressEscCloseSearch(e) {
+  if (e.keyCode == 27) {
+    closeSearch()
+  }
+}

src/styles/_breakpoints.sass

@@ -0,0 +1,8 @@
+// Bootstrap Breakpoints
+// sm 576.98px
+// md 576px - 757.98px
+// lg 992px to 1199.98px
+// xl 1200px and up
+@import ../../static/assets/bootstrap/sass/functions
+@import ../../static/assets/bootstrap/sass/variables
+@import ../../static/assets/bootstrap/sass/mixins/breakpoints

src/styles/_cards.sass

@@ -0,0 +1,36 @@
+.container.card-container
+	max-width: 1200px
+	margin-top: 56px
+	.col-md-4
+		padding: 0 20px
+		&:focus
+			outline: none;
+	.card
+		border: none
+		margin-bottom: 64px
+		.card-image
+			background-color: #ccc
+			border-radius: 0
+			height: 160px
+			max-height: 160px
+			min-height: 160px
+			margin: 0 auto
+			overflow: hidden
+			width: 100%
+			+media-breakpoint-up(sm)
+				height: 203px
+				max-height: 203px
+				min-height: 203px
+			img
+				height: 100%
+				object-fit: cover
+	.card-title
+		margin: 11px 0 5px
+		font-size: 27px
+		a
+			color: #111
+			text-decoration: none
+	.card-text
+		font-size: 18px
+	.card-body
+		padding: 0

src/styles/_colors.sass

@@ -0,0 +1,9 @@
+$primary: #0A68FF
+$grey: #EBEBEB
+$gray: #EBEBEB
+$dark: rgba(17,17,17,1)
+$muted: rgba(17,17,17,0.75)
+$lightgray: #F5F5F5
+// $theme-colors:
+//   primary: red
+//

src/styles/_footer.sass

@@ -0,0 +1,54 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+
+footer.container-fluid
+	background: #F8F8FB
+	border-top: 1px solid #E3E3E6
+	.container
+		margin-top: 11px
+		max-width: 1200px
+	.row
+		max-width: 1200px
+	.col-4
+		flex: 0 0 100%
+    flex-basis: 100%
+		max-width: 100%
+    margin-bottom: 60px
+		padding: 0 20px 56px
+		+media-breakpoint-up(sm)
+			padding: 0 20px 32px
+		+media-breakpoint-up(md)
+			flex: 0 0 33%
+			padding-bottom: 0
+			max-width: 33%
+			margin-bottom: 0px
+	.col
+		flex-basis: 50%
+		padding: 0 20px 32px
+		+media-breakpoint-up(sm)
+			flex-basis: 0
+			padding-bottom: 0
+	h5
+		color: $dark
+		font-weight: 600
+		margin-bottom: 12px
+		text-transform: uppercase
+	p
+		color: #6d6d6e
+		font-size: 16px
+		line-height: 30px
+	.list-unstyled
+		li
+			line-height: 30px
+		a
+			color: #6d6d6e
+			font-size: 16px
+			&:hover
+				color: #3F3F40
+	.social-icons
+		.list-inline-item:not(:last-child) 
+    	margin-right: 22px
+		a
+			opacity: 1
+			&:hover
+				opacity: 0.8

src/styles/_gallery.sass

@@ -0,0 +1,56 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+
+.gallery
+  .cta-arrow
+    margin-top: 20px
+  .container
+    max-width: 1190px
+    padding: 0
+    +media-breakpoint-up(sm)
+      padding-right: 15px
+      padding-left: 15px
+  .thumbnail
+    float: left
+    position: relative
+    width: 32.8%
+    padding-bottom: 32.9%
+    margin: 0.4%
+    overflow: hidden
+    // Fixes Thumbnail Spacing
+    &:nth-of-type(1),
+    &:nth-of-type(2),
+    &:nth-of-type(3)
+      margin-top: 0
+    &:nth-of-type(1),
+    &:nth-of-type(4),
+    &:nth-of-type(7)
+      margin-left: 0
+    &:nth-of-type(3),
+    &:nth-of-type(6)
+      margin-right: 0
+    +media-breakpoint-up(sm)
+      width: 22.4%
+      padding-bottom: 22.4%
+      margin: 1.73%
+      &:nth-of-type(4)
+        margin-top: 0
+      &:nth-of-type(1),
+      &:nth-of-type(5)
+        margin-left: 0
+      &:nth-of-type(4),
+      &:nth-of-type(7)
+        margin-left: 1.73%
+      &:nth-of-type(3),
+      &:nth-of-type(6)
+        margin-right: 1.73%
+      &:nth-of-type(4),
+      &:nth-of-type(8)
+        margin-right: 0
+  .thumbnail-container
+    position: absolute
+    width: 100%
+    height: 100%
+    img
+      width: 300%
+      transform: translate(-20%, -10%)

src/styles/_iframe.sass

@@ -0,0 +1,2 @@
+.embed-responsive
+  margin: 48px auto

src/styles/_jumbotron.sass

@@ -0,0 +1,32 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+
+.jumbotron
+	background-color: #fff
+	background-repeat: no-repeat
+	background-position: left top
+	background-size: cover
+	height: 360px
+	width: 100%
+	margin-bottom: 0px
+	+media-breakpoint-up(md)
+		height: 500px
+	+media-breakpoint-up(xl)
+		height: 600px
+	.container
+		max-width: 1160px
+		display: flex
+		height: 100%
+		flex-direction: column
+		justify-content: center
+	h1.display-4
+		color: white
+		font-weight: 400
+		font-size: 48px
+		margin: 0
+		text-shadow: 0 2px 2px rgba(0, 0, 0, 0.30)
+	.lead
+		max-width: 722px
+		text-shadow: 0 2px 2px rgba(0, 0, 0, 0.80)
+	p
+		color: white

src/styles/_navbar-secondary.sass

@@ -0,0 +1,41 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+
+.nav-scroller
+	position: relative
+	z-index: 2
+	height: 2.75rem
+	overflow-y: hidden
+.navbar-secondary
+	max-width: 700px
+	margin-bottom: 40px
+	padding-left: 0
+	border-bottom: 1px solid $gray
+	+media-breakpoint-up(sm)
+		margin-bottom: 56px
+	.nav
+		display: flex
+		flex-wrap: nowrap
+		overflow-x: auto
+		text-align: center
+		white-space: nowrap
+		-webkit-overflow-scrolling: touch
+	.nav-link
+		font-size: 18px
+		color: $dark
+		padding: 13px 4px
+		margin-right: 16px
+		margin-left: 16px
+		&:hover
+			color: $muted
+	.nav-title
+		font-weight: 600
+		@include media-breakpoint-up(md)
+			padding-left: 0
+			margin-left: 0
+		&:hover
+			color: $dark
+	.active
+		border-bottom: 2px solid $primary
+		&:hover
+			color: $dark

src/styles/_navbar.sass

@@ -0,0 +1,220 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+
+nav.navbar
+  background: #fff
+  height: auto
+  min-height: 48px
+  padding: 2px 20px
+  position: sticky
+  +media-breakpoint-up(md)
+    box-shadow: 0 2px 2px -2px rgba(0,0,0,.15)
+    height: 56px
+    padding: 10px 5px 10px 20px
+  &.sticky-top
+    +media-breakpoint-down(sm)
+      position: static
+  .navbar-brand
+    padding: .3125rem 0
+    z-index: 1002
+  .navbar-toggler
+    padding: 0
+    border-radius: 0
+    &:hover
+      background: none
+  .navbar-nav
+    margin-bottom: 15px
+    margin-top: 15px
+    +media-breakpoint-up(md)
+      margin: 0
+  li
+    line-height: 2.5
+    .special
+      top: 10px
+      left: 35px
+    a.navbar-item.active,
+    a.navbar-item.active:hover,
+    a.navbar-item:hover
+      box-shadow: none
+  li:last-of-type
+    // profile menu
+    z-index: 1002
+    .dropdown-menu
+      right: 0
+      left: auto
+      top: 54px
+      padding: .5rem 0
+      margin: .125rem 0 0
+      &.visible
+        visibility: visible
+      li a
+        padding: 0 15px 0 12px
+    li:hover
+      background-color: #f8f9fa
+  .dropdown ul.dropdown-menu li a
+    color: #111
+    font-family: 'Source Sans Pro', sans-serif
+    &:hover
+      color: #111
+      text-decoration: none
+  .nav-item .nav-link
+    font-size: 18px
+    color: $dark
+    padding: 10px
+    +media-breakpoint-up(lg)
+      padding: 6px 18px
+    &:hover
+      color: $primary
+  .navbar-toggler
+    border: 0
+    display: block
+    outline: none
+    +media-breakpoint-up(md)
+      display: none
+    span
+      width: 20px
+      height: 2px
+      background: $dark
+      display: block
+      margin-bottom: 4px
+      &:last-of-type
+        margin-bottom: 0
+  .collapsing
+    transition: none
+    display: none
+  #navbarNav
+    animation-timing-function: cubic-bezier(0.4,0,0.2,1)
+    animation-fill-mode: backwards
+    opacity: 1
+    transition: opacity .15s ease-in
+    visibility: visible
+    &.hidden
+      animation-fill-mode: backwards
+      animation-timing-function: cubic-bezier(0.4,0,0.2,1)
+      opacity: 0
+      transition: visibility 0s .15s, opacity .15s ease-in
+      visibility: hidden
+    .dropdown-toggle::after
+      display:none !important
+    &.show
+      padding-bottom: 75vh
+    .search-icon
+      display: flex
+      align-items: center
+      justify-content: center
+      padding: 0 8px
+      +media-breakpoint-up(lg)
+        padding: 0 16px
+  .pi-search
+    &::before
+      color: rgba(17,17,17,0.75)
+      font-size: 16px
+      &:hover
+        color: $primary
+  .nav-notifications
+    display: flex
+    align-items: center
+    justify-content: center
+    padding: 0 8px
+    +media-breakpoint-up(lg)
+      padding: 0 16px
+    .navbar-item
+      height: auto
+      padding: 0
+      .active
+        box-shadow: 0
+    .flyout
+      background-color: #fff
+      background-clip: padding-box
+      border: 1px solid rgba(0,0,0,.15)
+      border-radius: .25rem
+      box-shadow: 0
+      font-size: 16px
+    .flyout.notifications
+      right: 65px
+      top: 57px
+  .nav-notifications:hover>#notifications-toggle
+    display: block
+  .nav-notifications-icon
+    color: rgba(17,17,17,0.75)
+    &:hover
+      color: $primary
+  .gravatar
+    width: 32px
+    border-radius: 50%
+  .dropdown-menu
+    margin-top: -1px
+    border: 0
+    border-radius: 0 0 4px 4px
+    box-shadow: none
+    font-size: 1rem
+    color: #111
+    text-align: left
+    list-style: none
+    background-color: #fff
+    background-clip: padding-box
+    box-shadow: 0px 4px 4px 0px hsla(0, 0%, 80%, 0.25)
+  .dropdown:hover
+    background: none
+    &>.dropdown-menu
+      display: block
+  .dropdown-item
+    color: #111
+    font-size: 18px
+    padding: 0px 15px
+    i
+      padding-right: 8px
+#userDropdown
+  .nav-link
+    padding-top: 4px
+    padding-bottom: 0
+    padding-right: 0
+    outline: none
+#searchNav
+  display: flex
+  align-items: center
+  justify-content: center
+  background-color: #fff
+  max-height: 56px
+  position: absolute
+  width: calc(100% - 40px)
+  z-index: 1001
+  animation-timing-function: cubic-bezier(0.4,0,0.2,1)
+  animation-fill-mode: backwards
+  opacity: 1
+  transition: opacity .15s ease-in
+  visibility: visible
+  +media-breakpoint-up(md)
+    width: calc(100% - 25px)
+  &.hidden
+    animation-fill-mode: backwards
+    animation-timing-function: cubic-bezier(0.4,0,0.2,1)
+    opacity: 0
+    transition: visibility 0s .15s, opacity .15s ease-in
+    visibility: hidden
+  .search-container
+    position: relative
+    max-width: 560px
+    width: 100%
+  input
+    padding: 11px 20px 11px 46px
+    color: #4d4e53
+    box-shadow: none
+    border: 1px solid #e5e5e5
+    border-radius: 4px
+    border-bottom-color: none
+    background-color: #fcfcfc
+    font-size: 18px
+    transition: border-color 150ms ease-in-out, box-shadow 150ms ease-in-out
+    width: 100%
+    max-width: 560px
+  .search-icon
+    cursor: pointer
+    position: absolute
+    top: 14px
+    left: 11px
+  #searchCloseButton
+    cursor: pointer
+    position: absolute
+    right: 16px
+    top: 12px

src/styles/_typography.sass

@@ -0,0 +1,43 @@
+html
+	// changing font-size here, will change all bootstrap font-sizes
+	font-size: 20px
+body
+	font-family: 'Source Sans Pro', sans-serif
+	-webkit-font-smoothing: antialiased
+	-moz-osx-font-smoothing: grayscale
+	color: #212529
+h1, h2, h3, h4, h5
+	font-family: 'Source Sans Pro', sans-serif
+	margin-top: 0
+	margin-bottom: .5rem
+h1
+	font-size: 48px
+	line-height: 57px
+	font-weight: 500
+h2
+	font-size: 36px
+	line-height: 47px
+	font-weight: 500
+h3
+	font-size: 27px
+	line-height: 38px
+	font-weight: 500
+h4
+	font-size 21px
+	font-weight: 500
+	line-height: 34px
+h5
+	font-size: 15px
+	letter-spacing: 0.6px
+p
+	font-size: 20px
+	line-height: 1.5
+	margin-bottom: 1rem
+.lead
+	font-size: 20px
+	letter-spacing: 0.4px
+a
+	color: #007bff
+	&:hover
+		color: #007bff
+		text-decoration: underline

src/styles/base.sass

@@ -0,0 +1,17 @@
+/* mixins reused on every page
+   ================================================================== */
+@import ../styles/typography
+@import ../styles/navbar
+@import ../styles/footer
+
+
+/* Undo Old Base.css, main.css
+   ================================================================== */
+.container
+  width: 100%
+  padding-right: 15px
+  padding-left: 15px
+  margin-right: auto
+  margin-left: auto
+.navbar+.page-content
+  padding-top: 0

src/styles/project-landing.sass

@@ -1,353 +1,60 @@
-@import ../../../pillar/src/styles/_config
-@import ../../../pillar/src/styles/_utils
+@import ../styles/colors
+@import ../styles/breakpoints
+@import ../styles/jumbotron
+@import ../styles/navbar-secondary
+@import ../styles/iframe
+@import ../styles/gallery
+@import ../styles/cards
 
-$node-latest-thumbnail-size: 160px
-$node-latest-gallery-thumbnail-size: 200px
-body
-	background-color: white
-.page-body
-	background-color: white
+/* Undo main.css padding
+   ================================================================== */
+body,
+.container-page
+  background: #fff
+section.node-details-container.project
+  padding-bottom: 0
+  .node-details-title
+    padding-top: 0
+    padding-bottom: 0
 
-nav.navbar
-	background-color: white
-	.navbar-header
-		+media-xs
-			width: 100%
-
-	.navbar-brand
-		color: $color-text
-
-	li a.navbar-item
-		color: $color-text
-		&:hover
-			color: black
-		&:focus
-			color: black
-		&.active
-			color: black
-	.dropdown.open
-		a
-			background-color: white
-	.dropdown.libraries
-		&:hover
-			background: none
-		ul.dropdown-menu
-			background-color: white
-			li
-				a
-					color: $color-text
-					&:hover
-						color: black
-						background-color: white
-	.navbar-container
-		+container-behavior
-
-	.navbar-toggle
-		border: none
-		color: $color-text
-		position: absolute
-		right: 10px
-
-	.navbar-nav
-		+media-xs
-			padding: 10px
-
-	.search-input
-		display: none
-
-.node-details-container
-	max-width: 620px
-	font-family: $font-body
-	font-size: 1.3em
-	line-height: 1.5em
-	margin: 0 auto 40px auto
-	padding-bottom: 40px
-	+media-xs
-		padding-left: 10px
-		padding-right: 10px
-
-	p
-		margin-bottom: 1.3em
-
-header
-	display: flex
-	flex-direction: column   /* stack flex items vertically */
-	position: relative
-	img.header
-		width: 100%
-		flex-direction: column   /* stack flex items vertically */
-		position: relative
-	a.page-card-cta
-		position: absolute
-		left: 76%
-		top: 50%
-		transform: translate(-50%, -50%)
-		color: white
-		font-weight: bold
-		background: #ff4970
-		border-radius: 3px
-		border: none
-		box-shadow: 1px 1px 0 rgba(black, .2)
-		padding: 7px 20px
-		text-decoration: none
-		text-shadow: none
-
-		&:hover
-			background: lighten(#ff4970, 5%)
-
-.landing
-	h2
-		text-align: center
-		margin-bottom: 40px
+/* Override jumbotron to make it shorter than the default */
+.jumbotron
+  height: 400px
 
+/* Landing Page Sass
+   ================================================================== */
+.cta-arrow
+  img
+    padding-left: 11px
+.node-details-title
+  &.container
+    max-width: 1190px
+    h1,
+    h2,
+    h3,
+    ul,
+    p
+      max-width: 700px
+      margin-left: auto
+      margin-right: auto
 section
-	max-width: 1024px
-	padding-top: 20px
-	border-top: thin solid $color-background
-	margin: 0 auto
-
-a.btn
-	margin: 20px auto
-	font-size: 1.3em
-	padding: 9px 18px
-	border-radius: 8px
-	color: $color-text-dark
-
-.navbar-secondary
-	max-width: 620px
-	margin: 0 auto
-
-	.navbar-container
-		border-bottom: 1px solid #dddddd
-
-	.navbar-collapse
-		padding-left: 0
-
-	li
-		a
-			padding-left: 20px
-			padding-right: 20px
-			color: $color-text
-			&:hover
-			&.active
-				background: none
-				color: black
-				box-shadow: 0px 2px 0 rgba(red, .8)
-
-.node-extra
-	display: flex
-	flex-direction: column
-
-	//padding: 0 20px
-	width: 100%
-
-
-	.node-updates
-		flex: 1
-		font-size: 1.1em
-
-		ul
-			padding: 0
-			margin: 0 0 15px 0
-			display: flex
-			flex-direction: row
-			flex-wrap: wrap
-
-			li
-				display: flex
-				flex-direction: column
-				list-style: none
-				padding: 5px
-				cursor: pointer
-				width: 33.3333%
-
-				+media-xs
-					width: 100%
-
-				&.texture, &.group_texture
-					width: 25%
-
-				&:hover
-					img
-						opacity: .9
-					a.title
-						//color: $color-primary
-						text-decoration: underline
-
-				&.post
-					.info .title
-						//color: $node-type-post
-						font-size: 1.1em
-					a.image
-						border: none
-						//border-color: $node-type-post
-						background-color: hsl(hue($node-type-post), 20%, 55%)
-
-				&.asset.image a.image
-					border-color: $node-type-asset_image
-					background-color: hsl(hue($node-type-asset_image), 20%, 55%)
-				&.asset.file a.image
-					border-color: $node-type-asset_file
-					background-color: hsl(hue($node-type-asset_file), 20%, 55%)
-				&.asset.video a.image
-					border-color: $node-type-asset_video
-					background-color: hsl(hue($node-type-asset_video), 20%, 55%)
-
-				.image
-					width: 100%
-					height: $node-latest-thumbnail-size
-					min-height: $node-latest-thumbnail-size
-					max-height: $node-latest-thumbnail-size
-					background-color: $color-background
-					margin: 5px auto 10px auto
-					position: relative
-					overflow: hidden
-					border-radius: 0
-
-					img
-						max-height: $node-latest-thumbnail-size
-						+position-center-translate
-
-					i
-						color: rgba(white, .9)
-						font-size: 1.8em
-						position: absolute
-						bottom: 3px
-						left: 5px
-						text-shadow: 1px 1px 0 rgba(black, .2)
-
-						&.pi-file-archive
-							font-size: 1.5em
-							bottom: 5px
-						&.pi-newspaper
-							font-size: 1.6em
-							left: 7px
-
-					.ribbon
-						+ribbon
-
-				.info
-					width: 100%
-					height: 100%
-					display: flex
-					flex-direction: column
-					justify-content: space-between
-					word-break: break-word
-
-					.description
-						font-size: 1em
-						line-height: 1.8em
-						padding-top: 8px
-						color: $color-text-dark-primary
-
-					.title
-						display: block
-						font-size: 1.3em
-						color: $color-text-dark
-						font-weight: 600
-						+clearfix
-						+text-overflow-ellipsis
-
-					span.details
-						width: 100%
-						display: block
-						font-size: 1em
-						line-height: 1.2em
-						padding: 5px 0
-						color: $color-text-dark-secondary
-						+clearfix
-
-						.who
-							margin-left: 3px
-						.what
-							text-transform: capitalize
-
-
-$bg-color: #444
-$bg-color2: #666
-$yellow: rgb(249,229,89)
-$almost-white: rgb(255,255,255)
-$btn-transparent-color: rgba(249,229,89,1)
-$btn-transparent-bg: rgba(249,229,89,0)
-
-
-section.gallery
-	max-width: 1024px
-	margin: 60px auto 0 auto
-	text-align: center
-	padding-bottom: 40px
-
-	p
-		color: $almost-white
-		padding: 0 40px
-
-
-	.thumbnail
-		float: left
-		position: relative
-		width: 23%
-		padding-bottom: 23%
-		margin: 0.83%
-		overflow: hidden
-		&:hover
-			box-shadow: 2px 2px 50px 0 rgba(0,0,0,0.3)
-
-	.img-container
-		position: absolute
-		width: 100%
-		height: 100%
-
-		img
-			width: 300%
-			transform: translate(-20%,-10%)
-
-		&:hover .img-caption
-			top: 0
-			left: 0
-			.btn-trans
-				background: rgba(255,255,255,0.4)
-
-	.img-caption
-		position: absolute
-		width: 100%
-		height: 100%
-		background: rgba(0, 0, 0, 0.3)
-		text-align: center
-
-	.table
-		display: table
-		.table-cell
-			display: table-cell
-			vertical-align: bottom
-			border: none
-
-	@media screen and (max-width: 992px)
-		.thumbnail
-			width: 22%
-			padding-bottom: 22%
-			margin: 1.5%
-
-		.img-container:hover .img-caption
-				top: 0
-				left: 0
-
-		.img-caption
-			position: absolute
-			width: 100%
-			height: 100%
-			background: rgba(0, 0, 0, .7)
-			text-align: center
-			a
-				color: $yellow
-
-	@media screen and (max-width: 720px)
-		.thumbnail
-			width: 29%
-			padding-bottom: 29%
-			margin: 2.16%
-
-	@media screen and (max-width: 470px)
-		.thumbnail
-			width: 44%
-			padding-bottom: 44%
-			margin: 3%
+  margin-top: 104px
+  +media-breakpoint-up(sm)
+    margin-top: 152px
+  &:first-child
+    margin-top: 0
+  h2
+    margin-bottom: 24px
+    +media-breakpoint-up(sm)
+      margin-bottom: 40px
+.container.card-container
+  margin-top: 0
+  .card
+    .card-image
+      margin-top: 0
+footer.container-fluid
+	margin-top: 72px
+	+media-breakpoint-up(sm)
+		margin-top: 112px
+	+media-breakpoint-up(lg)
+		margin-top: 136px

src/styles/projects-index-collection.sass

@@ -0,0 +1,15 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+@import ../styles/jumbotron
+@import ../styles/navbar-secondary
+@import ../styles/cards
+
+body,
+.container-page
+  background: #fff
+footer.container-fluid	
+	margin-top: 72px
+	+media-breakpoint-up(sm)
+		margin-top: 112px
+	+media-breakpoint-up(lg)
+		margin-top: 136px

src/styles/welcome.sass

@@ -0,0 +1,29 @@
+@import ../styles/colors
+@import ../styles/breakpoints
+
+nav.navbar
+  +media-breakpoint-up(md)
+    padding: 10px 10px 10px 20px
+  .nav-item-sign-in
+    line-height: 1.5
+    display: flex
+    align-items: center
+    justify-content: center
+    .navbar-item
+.join .navbar .nav-item-sign-in a.navbar-item
+  background: $primary
+  font-size: 16px
+  font-weight: 600
+  margin: 0
+  padding: 8px 16px
+  width: 100%
+  &:hover
+    background: $primary
+  +media-breakpoint-up(md)
+    width: auto
+// temporarily restore old primary color
+h2,
+h3
+  color: #68B3C8
+footer.container-fluid
+  margin-top: 0

src/templates/layout.pug

@@ -45,8 +45,9 @@ html(lang="en")
 
 		link(href="{{ url_for('static', filename='assets/img/favicon.png') }}", rel="shortcut icon")
 		link(href="{{ url_for('static', filename='assets/img/apple-touch-icon-precomposed.png') }}", rel="icon apple-touch-icon-precomposed", sizes="192x192")
-
-		link(href="{{ url_for('static_pillar', filename='assets/css/vendor/bootstrap.min.css') }}", rel="stylesheet")
+		link(rel="stylesheet", href="{{ url_for('static', filename='assets/bootstrap/css/bootstrap.min.css') }}")
+		link(href="{{ url_for('static_pillar', filename='assets/css/font-pillar.css') }}", rel="stylesheet")
+		link(rel="stylesheet", href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600")
 		link(href="{{ url_for('static', filename='assets/google-font-roboto/roboto.css') }}", rel="stylesheet")
 
 		| {% block head %}{% endblock %}
@@ -58,6 +59,8 @@ html(lang="en")
 		link(href="{{ url_for('static_pillar', filename='assets/css/blog.css') }}", rel="stylesheet")
 		| {% else %}
 		link(href="{{ url_for('static_cloud', filename='assets/css/main.css') }}", rel="stylesheet")
+		link(href="{{ url_for('static_cloud', filename='assets/css/base.css') }}", rel="stylesheet")
+		
 		| {% endif %}
 		| {% endblock css %}
 
@@ -80,147 +83,86 @@ html(lang="en")
 			|		{% endif %}
 			| {% endwith %}
 
-			nav.navbar
-				.navbar-container
-					header.navbar-header
-						button.navbar-toggle(data-target=".navbar-collapse", data-toggle="collapse", type="button")
-							span.sr-only Toggle navigation
-							i.pi-menu
-						a.navbar-brand(
-							href="{{ url_for('main.homepage') }}",
-							title="Blender Cloud")
-							span.app-logo
-								i.pi-blender-cloud
-
-					| {% block navigation_search %}
-					.search-input
-						input#cloud-search(
-							type="text",
-							placeholder="Search assets, tutorials...")
+			//- Navigation Bar
+			nav.navbar.navbar-expand-md.navbar-light.sticky-top
+				//- Logo
+				a.navbar-brand(href="{{ url_for('main.homepage') }}")
+					img(src="{{ url_for('static', filename='assets/img/logo-blender-cloud-text.svg') }}", alt="alt")
+				//- Mobile Nav Button
+				button.navbar-toggler(type='button', data-toggle='collapse', data-target='#navbarNav', aria-controls="navbarNav", aria-expanded="false", aria-label="Toggle navigation")
+					span
+					span
+					span
+				//- Search Bar
+				#searchNav.hidden
+					span.search-container
+						input#cloud-search(type="text", placeholder="Search Blender Cloud")
 						i.search-icon.pi-search
-					| {% endblock navigation_search %}
+						a#searchCloseButton(ahref="#")
+							img(src="{{ url_for('static', filename='assets/img/icons/icon-close-button.svg') }}", alt="alt")
+				//- Links
+				#navbarNav.collapse.navbar-collapse.justify-content-end
+					ul.navbar-nav
+						| {% if node and node.properties and node.properties.category %}
+						| {% set category = node.properties.category %}
+						| {% else %}
+						| {% set category = title %}
+						| {% endif %}
 
-					nav.collapse.navbar-collapse
-						ul.nav.navbar-nav.navbar-right
-							| {% if node and node.properties and node.properties.category %}
-							| {% set category = node.properties.category %}
-							| {% else %}
-							| {% set category = title %}
-							| {% endif %}
+						| {% block navigation_sections %}
+						li.nav-item
+							a.nav-link(href="{{ url_for('main.main_blog') }}", class="{% if category == 'blog' %}active{% endif %}") Blog
+						li.nav-item.dropdown
+							a.nav-link.dropdown-toggle(href="#", data-toggle="dropdown") Libraries
+							.dropdown-menu
+								a.dropdown-item(
+									href="{{ url_for('projects.view', project_url='hdri') }}")
+									i.pi-globe
+									| HDRI
+								a.dropdown-item(
+									href="{{ url_for('projects.view', project_url='textures') }}")
+									i.pi-folder-texture
+									| Textures
+								a.dropdown-item(
+									href="{{ url_for('projects.view', project_url='characters') }}")
+									i.pi-character
+									| Characters
+						li.nav-item.dropdown
+							a.nav-link.dropdown-toggle(href="#", data-toggle="dropdown") Training
+							.dropdown-menu
+								a.dropdown-item(href="{{ url_for('cloud.courses') }}")
+									i.pi-graduation-cap
+									| Courses
+								a.dropdown-item(href="{{ url_for('cloud.workshops') }}")
+									i.pi-lightbulb
+									| Workshops
+								a.dropdown-item(href="{{ url_for('projects.view', project_url='gallery') }}")
+									i.pi-image
+									| Art Gallery
+						li.nav-item
+							a.nav-link(href="{{ url_for('cloud.open_projects') }}",
+									class="{% if category in ['open-projects', 'film'] %}active{% endif %}") Open Projects
+						li.nav-item
+							a.nav-link(href="{{ url_for('cloud.services') }}",
+									class="{% if category == 'services' %}active{% endif %}") Services
+  						
+						li.nav-item.search-icon
+							a#searchButton.navbar-item(data-toggle='collpase', data-target='#searchbarNav', href="#")
+								i.pi-search
+						| {% endblock navigation_sections %}
 
-							| {% block navigation_sections %}
-							li
-								a.navbar-item(
-									href="{{ url_for('main.main_blog') }}",
-									title="Blender Cloud Blog",
-									data-toggle="tooltip",
-									data-placement="bottom",
-									class="{% if category == 'blog' %}active{% endif %}")
-									span Blog
+						| {% if current_user.is_anonymous %}
+						li.nav-item
+							a.nav-link(
+								href="https://store.blender.org/product/membership/",
+								title="Sign up") Sign up
+						| {% endif %}
 
-							li(class="dropdown libraries")
-								a.navbar-item.dropdown-toggle(
-									href="",
-									data-toggle="dropdown",
-									title="Libraries")
-									span Libraries
-									i.pi-angle-down
-
-								ul.dropdown-menu
-									li
-										a.navbar-item(
-											href="{{ url_for('projects.view', project_url='hdri') }}",
-											title="HDRI Library",
-											data-toggle="tooltip",
-											data-placement="left")
-											i.pi-globe
-											| HDRI
-									li
-										a.navbar-item(
-											href="{{ url_for('projects.view', project_url='textures') }}",
-											title="Textures Library",
-											data-toggle="tooltip",
-											data-placement="left")
-											i.pi-folder-texture
-											| Textures
-									li
-										a.navbar-item(
-											href="{{ url_for('projects.view', project_url='characters') }}",
-											title="Character Library",
-											data-toggle="tooltip",
-											data-placement="left")
-											i.pi-character
-											| Characters
-
-
-							li(class="dropdown libraries")
-								a.navbar-item.dropdown-toggle(
-								href="",
-								data-toggle="dropdown",
-								title="Training")
-									span Training
-									i.pi-angle-down
-
-								ul.dropdown-menu
-									li
-										a.navbar-item(
-										href="{{ url_for('cloud.courses') }}",
-										title="Courses",
-										data-toggle="tooltip",
-										data-placement="left")
-											i.pi-graduation-cap
-											| Courses
-									li
-										a.navbar-item(
-										href="{{ url_for('cloud.workshops') }}",
-										title="Workshops",
-										data-toggle="tooltip",
-										data-placement="left")
-											i.pi-lightbulb
-											| Workshops
-									li
-										a.navbar-item(
-										href="{{ url_for('projects.view', project_url='gallery') }}",
-										title="Curated artwork collection",
-										data-toggle="tooltip",
-										data-placement="left")
-											i.pi-image
-											| Art Gallery
-
-							li
-								a.navbar-item(
-									href="{{ url_for('cloud.open_projects') }}",
-									title="Browse all the Open Projects",
-									data-toggle="tooltip",
-									data-placement="bottom",
-									class="{% if category in ['open-projects', 'film'] %}active{% endif %}")
-									span Open Projects
-							li
-								a.navbar-item(
-									href="{{ url_for('cloud.services') }}",
-									title="Blender Cloud Services",
-									data-toggle="tooltip",
-									data-placement="bottom",
-									class="{% if category == 'services' %}active{% endif %}")
-									span Services
-							| {% endblock navigation_sections %}
-
-
-							| {% if current_user.is_anonymous %}
-							li
-								a.navbar-item(
-									href="https://store.blender.org/product/membership/",
-									title="Sign up") Sign up
-							| {% endif %}
-
-
-							| {% block navigation_user %}
-
-							| {% include 'menus/notifications.html' %}
-							| {% include 'menus/user.html' %}
-
-							| {% endblock navigation_user %}
+						| {% block navigation_user %}
+						| {% include 'menus/notifications.html' %}
+						| {% include 'menus/user.html' %}
 
+						| {% endblock navigation_user %}
 
 			.page-content
 				#search-overlay
@@ -231,81 +173,79 @@ html(lang="en")
 					| {% block body %}{% endblock %}
 
 		| {% block footer_container %}
-		#footer-container
+		footer.container-fluid
 			| {% block footer_navigation %}
-			#footer-navigation
-				.container
-					.row
-						.col-md-4.col-xs-6
-							.footer-support
-								h4 Support & Feedback
-								p.
-									Let us know what you think or if you have any issues
-									just write to cloudsupport at blender dot org
+			.container.py-5
+				.row
+					.col-4
+						h5 Blender Cloud
+						p A creative hub for your projects, powered by free and open source software.
+						ul.list-inline.social-icons
+							li.list-inline-item
+								a(href="https://www.facebook.com/BlenderCloudOfficial/")
+									img(src="../../static/assets/img/icons/icon-social-facebook.svg", alt="alt")
+							li.list-inline-item
+								a(href="https://twitter.com/Blender_Cloud")
+									img(src="../../static/assets/img/icons/icon-social-twitter.svg", alt="alt")
+							li.list-inline-item
+								a(href="https://www.youtube.com/channel/UC5qvW9fotdsSJkCguB_t-kQ")
+									img(src="../../static/assets/img/icons/icon-social-youtube.svg", alt="alt")
+					.col
+						h5 Libraries
+						ul.list-unstyled.text-small
+							li
+								a(href="{{ url_for('projects.view', project_url='hdri') }}") HDRI
+							li
+								a(href="{{ url_for('projects.view', project_url='textures') }}") Textures
+							li
+								a(href="{{ url_for('projects.view', project_url='characters') }}") Characters
+					.col
+						h5 Training
+						ul.list-unstyled.text-small
+							li
+								a(href="{{ url_for('projects.view', project_url='gallery') }}") Art Gallery
+							li
+								a(href="{{ url_for('cloud.courses') }}") Courses
+							li
+								a(href="{{ url_for('cloud.workshops') }}") Workshops
+					.col
+						h5 Resources
+						ul.list-unstyled.text-small
+							li
+								a(href="https://www.blender.org") Blender
+							li
+								a(href="https://store.blender.org/") Blender Store
+							li
+								a(href="https://www.blender.org/foundation/") Contact Us
+							li
+								a(href="{{ url_for('cloud.terms_and_conditions') }}") Terms and Conditions
+							li
+								a(href="{{ url_for('cloud.privacy') }}") Privacy
+					.col
+						h5 Services
+						ul.list-unstyled.text-small
+							li
+								a(href="https://cloud.blender.org/services#attract") Attract
+							li
+								a(href="https://cloud.blender.org/services#blender-cloud-add-on") Blender Cloud Add-on
+							li
+								a(href="https://cloud.blender.org/services#blender-sync") Blender Sync
+							li
+								a(href="https://cloud.blender.org/services#flamenco") Flamenco
+							li
+								a(href="https://cloud.blender.org/services#image-sharing") Image Sharing
+							li
+								a(href="https://cloud.blender.org/services#projects") Private Projects
+							li
+								a(href="https://cloud.blender.org/services#texture-browser") Texture Browser
 
-						.col-md-2.col-xs-6
-							ul.footer-social
-								li
-									a(href="https://www.facebook.com/BlenderCloudOfficial/",
-										title="Follow us on Facebook")
-										i.pi-social-facebook
-								li
-									a(href="https://twitter.com/Blender_Cloud",
-										title="Follow us on Twitter")
-										i.pi-social-twitter
-
-						.col-md-2.col-xs-6
-							h4
-								a(href="{{ url_for('main.homepage') }}")
-									| Blender Cloud
-							ul.footer-links
-								li
-									a(href="{{ url_for('main.main_blog') }}",
-										title="Blender Cloud Blog")
-										| Blog
-								li
-									a(href="{{ url_for('cloud.services') }}",
-										title="Blender Cloud Services")
-										| Services
-								li
-									a(href="{{ url_for('cloud.about') }}",
-										title="About Blender Cloud")
-										| About
-								li
-									a(href="{{ url_for('cloud.terms_and_conditions') }}",
-										title="Terms and Conditions")
-										| Terms and Conditions
-								li
-									a(href="{{ url_for('cloud.privacy') }}",
-									title="Privacy")
-										| Privacy
-
-						.col-md-2.col-xs-6
-							h4
-								a(href="https://www.blender.org",
-									title="Blender official Website")
-									| Blender
-							ul.footer-links
-								li
-									a(href="https://www.blender.org",
-										title="Blender official Website")
-										| Blender.org
-								li
-									a(href="https://store.blender.org/",
-										title="The official Blender Store")
-										| Blender Store
-
-						.col-md-2.col-xs-6.special
-							| With the support of the <br/> MEDIA Programme of the European Union<br/><br/>
-							img(alt="MEDIA Programme of the European Union",
-									src="https://gooseberry.blender.org/wp-content/uploads/2014/01/media_programme.png")
 			| {% endblock footer_navigation %}
-
-			| {% block footer %}
-			footer.container
-				#hop(title="Be awesome in space")
-					i.pi-angle-up
-			| {% endblock footer %}
+			//- Scroll Up Arrow. Not sure if it's necessary
+			//- | {% block footer %}
+			//- footer.container
+			//- 	#hop(title="Be awesome in space")
+			//- 		i.pi-angle-up
+			//- | {% endblock footer %}
 		| {% endblock footer_container %}
 
 		#notification-pop(data-url="", data-read-toggle="")
@@ -321,7 +261,16 @@ html(lang="en")
 		noscript
 			link(href='//fonts.googleapis.com/css?family=Roboto:300,400', rel='stylesheet', type='text/css')
 
-		script(src="{{ url_for('static_pillar', filename='assets/js/vendor/jquery.bootstrap-3.3.7.min.js') }}")
+		//- script(src="{{ url_for('static_pillar', filename='assets/js/vendor/jquery.bootstrap-3.3.7.min.js') }}")
+
+		//- local bootstrap js returns error message, investigate later
+		//- script(src="{{ url_for('static', filename='assets/jquery/jquery.slim.min.js') }}")
+		//- script(src="{{ url_for('static', filename='assets/popper.js/popper.min.js') }}")
+		//- script(src="{{ url_for('static', filename='assets/bootstrap/js/bootstrap.min.js') }}")
+		script(src="https://code.jquery.com/jquery-3.3.1.min.js", integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=", crossorigin="anonymous")
+		script(src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js", integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49", crossorigin="anonymous")
+		script(src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/js/bootstrap.min.js", integrity="sha384-o+RDsa0aLu++PJvFqy8fFScvbHFLtbvScb8AjopnFD+iEQ7wo/CG0xlczd+2O/em", crossorigin="anonymous")
+		script(src="{{ url_for('static_cloud', filename='assets/js/layout.min.js') }}")
 
 		| {% if current_user.is_authenticated %}
 		script(src="{{ url_for('static_pillar', filename='assets/js/vendor/jquery.typewatch-3.0.0.min.js') }}")

src/templates/menus/user.pug

@@ -9,7 +9,7 @@
 | {% endif %}
 
 | {% block menu_avatar %}
-a.navbar-item.dropdown-toggle(href="#", data-toggle="dropdown", title="{{ current_user.email }}")
+a.nav-link.dropdown-toggle(href="#", data-toggle="dropdown", title="{{ current_user.email }}", aria-haspopup="true", aria-expanded="false")
 	img.gravatar(
 	src="{{ current_user.gravatar }}",
 	class="{{ subscription }}",
@@ -26,26 +26,26 @@ a.navbar-item.dropdown-toggle(href="#", data-toggle="dropdown", title="{{ curren
 
 
 | {% block menu_list %}
-li.subscription-status(class="{{ subscription }}")
+.dropdown-menu.subscription-status(class="{{ subscription }}", aria-labelledby="dropdownMenuLink")
 	| {% if subscription == 'subscriber' %}
-	a.navbar-item(
+	a.dropdown-item(
 	href="{{url_for('settings.billing')}}"
 	title="View subscription info")
 		i.pi-grin
 		span Your subscription is active!
 	| {% elif subscription == 'demo' %}
-	a.navbar-item(
+	a.dropdown-item(
 	href="{{url_for('settings.billing')}}"
 	title="View subscription info")
 		i.pi-heart-filled
 		span You have a free account.
 	| {% elif current_user.has_cap('can-renew-subscription') %}
-	a.navbar-item(target='_blank', href="/renew", title="Renew subscription")
+	a.dropdown-item(target='_blank', href="/renew", title="Renew subscription")
 		i.pi-heart
 		span.info Your subscription is not active.
 			span.renew Click here to renew.
 	| {% else %}
-	a.navbar-item(
+	a.dropdown-item(
 	href="https://store.blender.org/product/membership/"
 	title="Renew subscription")
 		i.pi-unhappy
@@ -56,7 +56,7 @@ li.subscription-status(class="{{ subscription }}")
 | {{ super() }}
 
 li
-	a.navbar-item(
+	a.dropdown-item(
 	href="{{ url_for('settings.billing') }}"
 	title="Billing")
 		i.pi-credit-card

src/templates/projects/landing.pug

@@ -75,92 +75,85 @@ meta(property="og:url", content="{{url_for('projects.view', project_url=project.
 script(src="{{ url_for('static_pillar', filename='assets/js/vendor/videojs-6.2.8.min.js') }}")
 script(src="{{ url_for('static_pillar', filename='assets/js/vendor/videojs-ga-0.4.2.min.js') }}")
 script(src="{{ url_for('static_pillar', filename='assets/js/vendor/videojs-hotkeys-0.2.20.min.js') }}")
+script(src="{{ url_for('static_cloud', filename='assets/js/photoswipe.min.js') }}")
 | {% endblock %}
 
 | {% block css %}
-link(href="{{ url_for('static_pillar', filename='assets/css/font-pillar.css') }}", rel="stylesheet")
-link(href="{{ url_for('static_pillar', filename='assets/css/base.css') }}", rel="stylesheet")
+| {{ super() }}
 link(href="{{ url_for('static_cloud', filename='assets/css/project-landing.css') }}", rel="stylesheet")
 | {% endblock %}
 
 | {% block body %}
 header
-	//a(href="{{ url_for( 'projects.view', project_url=project.url) }}")
-	img.header(src="{{ project.picture_header.thumbnail('h', api=api) }}")
+.jumbotron.jumbotron-fluid(
+	style="background-image: url('{{ project.picture_header.thumbnail('h', api=api) }}'); background-position: 50% 50%;")
 
+| {# Secondary Navigation #}
 | {% block navbar_secondary %}
 | {{ projectmacros.render_secondary_navigation(project, pages=pages) }}
-
 | {% endblock navbar_secondary %}
-#container.landing
+
+.container.landing
 	section.node-details-container.project
-		.node-details-title
+		.node-details-title.container
 			h1 {{ project.name }}
 
-		| {% if project.description %}
-		.node-details-description
+			| {% if project.description %}
 			| {{ project | markdowned('description') }}
-		| {% endif %}
-
+			| {% endif %}
 
 	section.gallery
-		h2 Gallery
-		| {% for n in activity_stream %}
-		| {% if n.node_type not in ['comment', 'post'] and n.picture %}
-		.thumbnail.expand-image-links
-			.img-container
-				a(href="{{ n.picture.thumbnail('l', api=api) }}", data-node_id="{{ n._id }}")
-					img(src="{{ n.picture.thumbnail('l', api=api) }}", alt="{{ n.name }}")
-					.img-caption.table
-						| {# Not using for the moment
-						span.table-cell {{ n.name }}
-						| #}
-		| {% endif %}
-		| {% endfor %}
-		div(class="clearfix")
-		| {% if project.nodes_featured %}
-		| {# In some cases featured_nodes might might be embedded #}
-		| {% if '_id' in project.nodes_featured[0] %}
-		| {% set featured_node_id=project.nodes_featured[0]._id %}
-		| {% else %}
-		| {% set featured_node_id=project.nodes_featured[0] %}
-		| {% endif %}
-		a.btn(href="{{ url_for('projects.view_node', project_url=project.url, node_id=featured_node_id) }}") See more
-		| {% endif %}
+		h2.text-center Gallery
+		.container
+			| {% for n in activity_stream %}
+			| {% if n.node_type not in ['comment', 'post'] and n.picture %}
+			.thumbnail.expand-image-links
+				.thumbnail-container
+					a(href="{{ n.picture.thumbnail('l', api=api) }}", data-node_id="{{ n._id }}")
+						img(src="{{ n.picture.thumbnail('l', api=api) }}", alt="{{ n.name }}")
+			| {% endif %}
+			| {% endfor %}
+			.clearfix
+			| {% if project.nodes_featured %}
+			| {# In some cases featured_nodes might might be embedded #}
+			| {% if '_id' in project.nodes_featured[0] %}
+			| {% set featured_node_id=project.nodes_featured[0]._id %}
+			| {% else %}
+			| {% set featured_node_id=project.nodes_featured[0] %}
+			| {% endif %}
+			p.cta-arrow.text-center
+				a(href="{{ url_for('projects.view_node', project_url=project.url, node_id=featured_node_id) }}")
+					| See more
+					i.pi-angle-right
+			| {% endif %}
+
 
 
 	section.node-extra
-		h2 Latest Updates
-
+		h2.text-center Latest Updates
 		| {% if activity_stream %}
-		.node-updates
-			ul.node-updates-list
+		.container.card-container
+			.row
 				| {% for n in activity_stream %}
 				| {% if n.node_type == 'post' %}
-				li.node-updates-list-item(
-				data-node_id="{{ n._id }}",
-				class="{{ n.node_type }} {{ n.properties.content_type | hide_none }}")
-					a.image(href="{{ url_for_node(node=n) }}")
-						| {% if n.picture %}
-						img(src="{{ n.picture.thumbnail('l', api=api) }}")
-						| {% endif %}
-
-					.info
-						a.title(href="{{ url_for_node(node=n) }}") {{ n.name }}
-						p.description(href="{{ url_for_node(node=n) }}")
-							| {% if n.node_type == 'post' %}
-							| {{ n.properties | markdowned('content') | striptags | truncate(140, end="... <small>read more</small>") | safe | hide_none }}
-							| {% else %}
-							| {{ n | markdowned('description') | striptags | truncate(140, end="... <small>read more</small>") | safe | hide_none }}
+				.col-md-4
+					.card
+						a.card-image(href="{{ url_for_node(node=n) }}")
+							| {% if n.picture %}
+							img.card-img-top(src="{{ n.picture.thumbnail('l', api=api) }}")
 							| {% endif %}
-						//span.details
-						//	span.what {% if n.properties.content_type %}{{ n.properties.content_type | undertitle }}{% else %}{{ n.node_type | undertitle }}{% endif %} ·
-						//	span.when  {{ n._updated | pretty_date }} by
-						//	span.who {{ n.user.full_name }}
+						.card-body
+							h4.card-title
+								a(href="{{ url_for_node(node=n) }}") {{ n.name }}
+							p.card-text {{ n.properties | markdowned('content') | striptags | truncate(140, end="... <small>read more</small>") | safe | hide_none }}
 				| {% endif %}
 				| {% endfor %}
 		| {% endif %}
-		a.btn(href="{{ url_for('main.project_blog', project_url=project.url) }}") See all updates
+		.clearfix
+			p.cta-arrow.text-center
+				a(href="{{ url_for('main.project_blog', project_url=project.url) }}")
+					| See all updates
+					i.pi-angle-right
 
 | {% endblock body %}
 

src/templates/projects_index_collection.pug

@@ -3,20 +3,20 @@
 | {# Default case is Open Projects #}
 | {% set page_title = 'Open Projects' %}
 | {% set page_description = 'Full production data and tutorials from all open movies, for you to use freely' %}
-| {% set page_header_image = url_for('static', filename='assets/img/backgrounds/background_agent327_01.jpg') %}
-| {% set page_header_text = 'The iconic Blender Institute Open Movies. Featuring all the production files, assets, artwork, and never-seen-before content.' %}
+| {% set page_header_image = url_for('static', filename='assets/img/backgrounds/banner-open-projects.jpg') %}
+| {% set page_header_text = 'See how each film came to be. Explore our production files, assets, artwork and more. Get full access to behind the scenes at the Blender Animation Studio. Follow along as we share our process and techniques for each movie.' %}
 
-| {% if title == 'courses' %}
-| 	{% set page_title = 'Courses' %}
+| {% if title == 'courses' or title == 'workshops' %}
+| 	{% set page_title = 'Training' %}
 | 	{% set page_description = 'Production quality training by 3D professionals' %}
-| 	{% set page_header_image = url_for('static', filename='assets/img/backgrounds/background_caminandes_3_03.jpg') %}
-| 	{% set page_header_text = 'Character modeling, 3D printing, VFX, rigging and more.' %}
+| 	{% set page_header_image = url_for('static', filename='assets/img/backgrounds/banner-training.jpg') %}
+| 	{% set page_header_text = 'Browse through our structured courses. Choose a workshop where top Blender Artists walk you through professional techniques to build a specific project. Visit the Art Gallery where you can download and study source files from your favorite artists.' %}
 
-| {% elif title == 'workshops' %}
-| 	{% set page_title = 'Workshops' %}
-| 	{% set page_description = 'Production quality training by 3D professionals' %}
-| 	{% set page_header_image = url_for('static', filename='assets/img/backgrounds/background_caminandes_3_03.jpg') %}
-| 	{% set page_header_text = 'Enter the artist workshop and learn by example.' %}
+//- | {% elif title == 'workshops' %}
+//- | 	{% set page_title = 'Workshops' %}
+//- | 	{% set page_description = 'Production quality training by 3D professionals' %}
+//- | 	{% set page_header_image = url_for('static', filename='assets/img/backgrounds/background_caminandes_3_03.jpg') %}
+//- | 	{% set page_header_text = 'Enter the artist workshop and learn by example.' %}
 
 | {% endif %}
 
@@ -33,65 +33,74 @@ meta(name="twitter:description", content="{{ page_description }}")
 meta(property="og:image", content="{{ page_header_image }}")
 meta(name="twitter:image", content="{{ page_header_image }}")
 | {% endblock %}
+| {% block css %}
+| {{ super() }}
+link(href="{{ url_for('static_cloud', filename='assets/css/projects-index-collection.css') }}", rel="stylesheet")
+| {% endblock css %}
 
 | {% block page_title %}
 | {{ page_title }}
 | {% endblock %}
 
 | {% block body %}
+	
+//- Jumbotron
+.jumbotron.jumbotron-fluid(style="background-image: url('{{ page_header_image }}')")
+	.container
+		h1.display-4.node_index-collection-name {{ page_title }}
+		p.lead.node_index-collection-description {{ page_header_text }}
+//- Secondary Navigation
+| {%  if title == 'courses' or title == 'workshops' %}
+.container.navbar-secondary
+	ul.nav.justify-content-left
+		li.nav-item
+			a.nav-link.nav-title(href="#") Training
+		li.nav-item
+			a.nav-link(href="#", class="{% if title == 'courses' %}active{% endif %}") Courses
+		li.nav-item
+			a.nav-link(href="#", class="{% if title == 'workshops' %}active{% endif %}") Workshops
+		li.nav-item
+			a.nav-link(href="#") Art Gallery
+| {%  endif %}
+//- Project Cards
+.container.card-container
+	.row
+		| {% for project in projects %}
+		| {% if (project.status == 'published') or (project.status == 'pending' and current_user.is_authenticated) and project._id != config.MAIN_PROJECT_ID %}
 
-#project-container
-
-	#node_index-container
-		#node_index-header.collection
-			img.background-header(src="{{ page_header_image }}")
-			#node_index-collection-info
-				.node_index-collection-name
-					span {{ page_title }}
-				.node_index-collection-description
-					span.
-						{{ page_header_text }}
-
-		.node_index-collection
-
-			| {% for project in projects %}
-			| {% if (project.status == 'published') or (project.status == 'pending' and current_user.is_authenticated) and project._id != config.MAIN_PROJECT_ID %}
-
-			.node_index-collection-card.project(
-				data-url="{{ url_for('projects.view', project_url=project.url) }}",
-				tabindex="{{ loop.index }}")
+		.col-md-4(
+			data-url="{{ url_for('projects.view', project_url=project.url) }}",
+			tabindex="{{ loop.index }}")
+			.card
 				| {% if project.picture_header %}
-				a.item-header(
-					href="{{ url_for('projects.view', project_url=project.url) }}")
-					img(src="{{ project.picture_header.thumbnail('l', api=api) }}")
+				a.card-image(href="{{ url_for('projects.view', project_url=project.url) }}")
+					img.card-img-top(src="{{ project.picture_header.thumbnail('l', api=api) }}")
 				| {% endif %}
 
-				.item-info
-					a.item-title(
-						href="{{ url_for('projects.view', project_url=project.url) }}")
-						| {{project.name}}
-						| {% if project.status == 'pending' and current_user.is_authenticated and current_user.has_role('admin') %}
-						small (pending)
-						| {% endif %}
+				.card-body
+					h4.card-title
+						a(href="{{ url_for('projects.view', project_url=project.url) }}")
+							| {{project.name}}
+							| {% if project.status == 'pending' and current_user.is_authenticated and current_user.has_role('admin') %}
+							small (pending)
+							| {% endif %}
 
 					| {% if project.summary %}
-					p.item-description
+					p.card-text
 						| {{project.summary|safe}}
 					| {% endif %}
 
-				a.learn-more LEARN MORE
-
-			| {% endif %}
-			| {% endfor %}
+		| {% endif %}
+		| {% endfor %}
 
 
 | {% endblock %}
 
 
 | {% block footer_scripts %}
-script.
-	$('.node_index-collection-card.project').on('click', function(e){
-		e.preventDefault();
-		window.location.href = $(this).data('url');
-	});
+//- script.
+//- 	$('.node_index-collection-card.project').on('click', function(e){
+//- 		e.preventDefault();
+//- 		window.location.href = $(this).data('url');
+//- 	});
 | {% endblock %}

src/templates/welcome.pug

@@ -11,6 +11,10 @@ meta(property="og:title", content="Blender Cloud - Open Content Production Platf
 meta(property="og:url", content="https://cloud.blender.org/")
 meta(property="og:image", content="{{ url_for('static', filename='assets/img/backgrounds/background_dweebs_01.jpg')}}")
 | {% endblock og %}
+| {% block css %}
+| {{ super() }}
+link(href="{{ url_for('static_cloud', filename='assets/css/welcome.css') }}", rel="stylesheet")
+| {% endblock css %}
 
 | {% block page_overlay %}
 #page-overlay.video
@@ -19,12 +23,10 @@ meta(property="og:image", content="{{ url_for('static', filename='assets/img/bac
 
 | {% block navigation_search %}{% endblock %}
 | {% block navigation_sections %}
-li
-	a.navbar-item(href="{{ url_for('main.main_blog') }}")
-		span Blog
-li
-	a.navbar-item(href="#pricing")
-		span Pricing
+li.nav-item
+	a.nav-link(href="{{ url_for('main.main_blog') }}") Blog
+li.nav-item
+	a.nav-link(href="#pricing") Pricing
 | {% endblock navigation_sections %}
 
 | {% block navigation_user %}

static/assets/bootstrap/sass/_alert.sass

@@ -0,0 +1,43 @@
+//
+// Base styles
+//
+
+.alert
+  position: relative
+  padding: $alert-padding-y $alert-padding-x
+  margin-bottom: $alert-margin-bottom
+  border: $alert-border-width solid transparent
+
+  +border-radius($alert-border-radius)
+
+// Headings for larger alerts
+.alert-heading
+  // Specified to prevent conflicts of changing $headings-color
+  color: inherit
+
+// Provide class for links that match alerts
+.alert-link
+  font-weight: $alert-link-font-weight
+
+// Dismissible alerts
+//
+// Expand the right padding and account for the close button's positioning.
+
+.alert-dismissible
+  padding-right: $close-font-size + $alert-padding-x * 2
+
+  // Adjust close link position
+  .close
+    position: absolute
+    top: 0
+    right: 0
+    padding: $alert-padding-y $alert-padding-x
+    color: inherit
+
+// Alternate styles
+//
+// Generate contextual modifier classes for colorizing the alert.
+
+@each $color, $value in $theme-colors
+  .alert-#{$color}
+    +alert-variant(theme-color-level($color, $alert-bg-level), theme-color-level($color, $alert-border-level), theme-color-level($color, $alert-color-level))

static/assets/bootstrap/sass/_badge.sass

@@ -0,0 +1,43 @@
+// Base class
+//
+// Requires one of the contextual, color modifier classes for `color` and
+// `background-color`.
+
+.badge
+  display: inline-block
+  padding: $badge-padding-y $badge-padding-x
+  font-size: $badge-font-size
+  font-weight: $badge-font-weight
+  line-height: 1
+  text-align: center
+  white-space: nowrap
+  vertical-align: baseline
+
+  +border-radius($badge-border-radius)
+
+  // Empty badges collapse automatically
+  &:empty
+    display: none
+
+// Quick fix for badges in buttons
+.btn .badge
+  position: relative
+  top: -1px
+
+// Pill badges
+//
+// Make them extra rounded with a modifier to replace v3's badges.
+
+.badge-pill
+  padding-right: $badge-pill-padding-x
+  padding-left: $badge-pill-padding-x
+
+  +border-radius($badge-pill-border-radius)
+
+// Colors
+//
+// Contextual variations (linked badges get darker on :hover).
+
+@each $color, $value in $theme-colors
+  .badge-#{$color}
+    +badge-variant($value)

static/assets/bootstrap/sass/_breadcrumb.sass

@@ -0,0 +1,38 @@
+.breadcrumb
+  display: flex
+  flex-wrap: wrap
+  padding: $breadcrumb-padding-y $breadcrumb-padding-x
+  margin-bottom: $breadcrumb-margin-bottom
+  list-style: none
+  background-color: $breadcrumb-bg
+
+  +border-radius($breadcrumb-border-radius)
+
+.breadcrumb-item
+  // The separator between breadcrumbs (by default, a forward-slash: "/")
+  + .breadcrumb-item
+    padding-left: $breadcrumb-item-padding
+
+    &::before
+      display: inline-block
+
+      // Suppress underlining of the separator in modern browsers
+      padding-right: $breadcrumb-item-padding
+      color: $breadcrumb-divider-color
+      content: $breadcrumb-divider
+
+  // IE9-11 hack to properly handle hyperlink underlines for breadcrumbs built
+  // without `<ul>`s. The `::before` pseudo-element generates an element
+  // *within* the .breadcrumb-item and thereby inherits the `text-decoration`.
+  //
+  // To trick IE into suppressing the underline, we give the pseudo-element an
+  // underline and then immediately remove it.
+  + .breadcrumb-item:hover::before
+    text-decoration: underline
+
+  // stylelint-disable-next-line no-duplicate-selectors
+  + .breadcrumb-item:hover::before
+    text-decoration: none
+
+  &.active
+    color: $breadcrumb-active-color

static/assets/bootstrap/sass/_button-group.sass

@@ -0,0 +1,151 @@
+// stylelint-disable selector-no-qualifying-type
+
+// Make the div behave like a button
+.btn-group,
+.btn-group-vertical
+  position: relative
+  display: inline-flex
+  vertical-align: middle
+
+  // match .btn alignment given font-size hack above
+
+  > .btn
+    position: relative
+    flex: 0 1 auto
+
+    // Bring the hover, focused, and "active" buttons to the front to overlay
+    // the borders properly
+    +hover
+      z-index: 1
+
+
+    &:focus,
+    &:active,
+    &.active
+      z-index: 1
+
+  // Prevent double borders when buttons are next to each other
+  .btn + .btn,
+  .btn + .btn-group,
+  .btn-group + .btn,
+  .btn-group + .btn-group
+    margin-left: -$btn-border-width
+
+// Optional: Group multiple button groups together for a toolbar
+.btn-toolbar
+  display: flex
+  flex-wrap: wrap
+  justify-content: flex-start
+
+  .input-group
+    width: auto
+
+.btn-group
+  > .btn:first-child
+    margin-left: 0
+
+  // Reset rounded corners
+  > .btn:not(:last-child):not(.dropdown-toggle),
+  > .btn-group:not(:last-child) > .btn
+    +border-right-radius(0)
+
+  > .btn:not(:first-child),
+  > .btn-group:not(:first-child) > .btn
+    +border-left-radius(0)
+
+// Sizing
+//
+// Remix the default button sizing classes into new ones for easier manipulation.
+
+.btn-group-sm > .btn
+  @extend .btn-sm
+
+.btn-group-lg > .btn
+  @extend .btn-lg
+
+//
+// Split button dropdowns
+//
+
+.dropdown-toggle-split
+  padding-right: $btn-padding-x * 0.75
+  padding-left: $btn-padding-x * 0.75
+
+  &::after,
+  .dropup &::after,
+  .dropright &::after
+    margin-left: 0
+
+  .dropleft &::before
+    margin-right: 0
+
+.btn-sm + .dropdown-toggle-split
+  padding-right: $btn-padding-x-sm * 0.75
+  padding-left: $btn-padding-x-sm * 0.75
+
+.btn-lg + .dropdown-toggle-split
+  padding-right: $btn-padding-x-lg * 0.75
+  padding-left: $btn-padding-x-lg * 0.75
+
+// The clickable button for toggling the menu
+// Set the same inset shadow as the :active state
+.btn-group.show .dropdown-toggle
+  +box-shadow($btn-active-box-shadow)
+
+  // Show no shadow for `.btn-link` since it has no other button styles.
+  &.btn-link
+    +box-shadow(none)
+
+//
+// Vertical button groups
+//
+
+.btn-group-vertical
+  flex-direction: column
+  align-items: flex-start
+  justify-content: center
+
+  .btn,
+  .btn-group
+    width: 100%
+
+  > .btn + .btn,
+  > .btn + .btn-group,
+  > .btn-group + .btn,
+  > .btn-group + .btn-group
+    margin-top: -$btn-border-width
+    margin-left: 0
+
+  // Reset rounded corners
+  > .btn:not(:last-child):not(.dropdown-toggle),
+  > .btn-group:not(:last-child) > .btn
+    +border-bottom-radius(0)
+
+  > .btn:not(:first-child),
+  > .btn-group:not(:first-child) > .btn
+    +border-top-radius(0)
+
+// Checkbox and radio options
+//
+// In order to support the browser's form validation feedback, powered by the
+// `required` attribute, we have to "hide" the inputs via `clip`. We cannot use
+// `display: none;` or `visibility: hidden;` as that also hides the popover.
+// Simply visually hiding the inputs via `opacity` would leave them clickable in
+// certain cases which is prevented by using `clip` and `pointer-events`.
+// This way, we ensure a DOM element is visible to position the popover from.
+//
+// See https://github.com/twbs/bootstrap/pull/12794 and
+// https://github.com/twbs/bootstrap/pull/14559 for more information.
+
+.btn-group-toggle
+  > .btn,
+  > .btn-group > .btn
+    margin-bottom: 0
+
+    // Override default `<label>` value
+
+    input[type="radio"],
+    input[type="checkbox"]
+      position: absolute
+      clip: rect(0, 0, 0, 0)
+      pointer-events: none

static/assets/bootstrap/sass/_buttons.sass

@@ -0,0 +1,123 @@
+// stylelint-disable selector-no-qualifying-type
+
+//
+// Base styles
+//
+
+.btn
+  display: inline-block
+  font-weight: $btn-font-weight
+  text-align: center
+  white-space: nowrap
+  vertical-align: middle
+  user-select: none
+  border: $btn-border-width solid transparent
+
+  +button-size($btn-padding-y, $btn-padding-x, $font-size-base, $btn-line-height, $btn-border-radius)
+  +transition($btn-transition)
+
+  // Share hover and focus styles
+  +hover-focus
+    text-decoration: none
+
+
+  &:focus,
+  &.focus
+    outline: 0
+    box-shadow: $btn-focus-box-shadow
+
+  // Disabled comes first so active can properly restyle
+  &.disabled,
+  &:disabled
+    opacity: $btn-disabled-opacity
+
+    +box-shadow(none)
+
+  // Opinionated: add "hand" cursor to non-disabled .btn elements
+  &:not(:disabled):not(.disabled)
+    cursor: pointer
+
+  &:not(:disabled):not(.disabled):active,
+  &:not(:disabled):not(.disabled).active
+    background-image: none
+
+    +box-shadow($btn-active-box-shadow)
+
+    &:focus
+      +box-shadow($btn-focus-box-shadow, $btn-active-box-shadow)
+
+// Future-proof disabling of clicks on `<a>` elements
+a.btn.disabled,
+fieldset:disabled a.btn
+  pointer-events: none
+
+//
+// Alternate buttons
+//
+
+@each $color, $value in $theme-colors
+  .btn-#{$color}
+    +button-variant($value, $value)
+
+@each $color, $value in $theme-colors
+  .btn-outline-#{$color}
+    +button-outline-variant($value)
+
+//
+// Link buttons
+//
+
+// Make a button look and behave like a link
+.btn-link
+  font-weight: $font-weight-normal
+  color: $link-color
+  background-color: transparent
+
+  +hover
+    color: $link-hover-color
+    text-decoration: $link-hover-decoration
+    background-color: transparent
+    border-color: transparent
+
+
+  &:focus,
+  &.focus
+    text-decoration: $link-hover-decoration
+    border-color: transparent
+    box-shadow: none
+
+  &:disabled,
+  &.disabled
+    color: $btn-link-disabled-color
+    pointer-events: none
+
+  // No need for an active state here
+
+//
+// Button Sizes
+//
+
+.btn-lg
+  +button-size($btn-padding-y-lg, $btn-padding-x-lg, $font-size-lg, $btn-line-height-lg, $btn-border-radius-lg)
+
+.btn-sm
+  +button-size($btn-padding-y-sm, $btn-padding-x-sm, $font-size-sm, $btn-line-height-sm, $btn-border-radius-sm)
+
+//
+// Block button
+//
+
+.btn-block
+  display: block
+  width: 100%
+
+  // Vertically space out multiple block buttons
+  + .btn-block
+    margin-top: $btn-block-spacing-y
+
+// Specificity overrides
+input[type="submit"],
+input[type="reset"],
+input[type="button"]
+  &.btn-block
+    width: 100%

static/assets/bootstrap/sass/_card.sass

@@ -0,0 +1,261 @@
+//
+// Base styles
+//
+
+.card
+  position: relative
+  display: flex
+  flex-direction: column
+  min-width: 0
+  word-wrap: break-word
+  background-color: $card-bg
+  background-clip: border-box
+  border: $card-border-width solid $card-border-color
+
+  +border-radius($card-border-radius)
+
+  > hr
+    margin-right: 0
+    margin-left: 0
+
+  > .list-group:first-child
+    .list-group-item:first-child
+      +border-top-radius($card-border-radius)
+
+  > .list-group:last-child
+    .list-group-item:last-child
+      +border-bottom-radius($card-border-radius)
+
+.card-body
+  // Enable `flex-grow: 1` for decks and groups so that card blocks take up
+  // as much space as possible, ensuring footers are aligned to the bottom.
+  flex: 1 1 auto
+  padding: $card-spacer-x
+
+.card-title
+  margin-bottom: $card-spacer-y
+
+.card-subtitle
+  margin-top: -($card-spacer-y / 2)
+  margin-bottom: 0
+
+.card-text:last-child
+  margin-bottom: 0
+
+.card-link
+  +hover
+    text-decoration: none
+
+
+  + .card-link
+    margin-left: $card-spacer-x
+
+//
+// Optional textual caps
+//
+
+.card-header
+  padding: $card-spacer-y $card-spacer-x
+  margin-bottom: 0
+
+  // Removes the default margin-bottom of <hN>
+  background-color: $card-cap-bg
+  border-bottom: $card-border-width solid $card-border-color
+
+  &:first-child
+    +border-radius($card-inner-border-radius $card-inner-border-radius 0 0)
+
+  + .list-group
+    .list-group-item:first-child
+      border-top: 0
+
+.card-footer
+  padding: $card-spacer-y $card-spacer-x
+  background-color: $card-cap-bg
+  border-top: $card-border-width solid $card-border-color
+
+  &:last-child
+    +border-radius(0 0 $card-inner-border-radius $card-inner-border-radius)
+
+//
+// Header navs
+//
+
+.card-header-tabs
+  margin-right: -($card-spacer-x / 2)
+  margin-bottom: -$card-spacer-y
+  margin-left: -($card-spacer-x / 2)
+  border-bottom: 0
+
+.card-header-pills
+  margin-right: -($card-spacer-x / 2)
+  margin-left: -($card-spacer-x / 2)
+
+// Card image
+.card-img-overlay
+  position: absolute
+  top: 0
+  right: 0
+  bottom: 0
+  left: 0
+  padding: $card-img-overlay-padding
+
+.card-img
+  width: 100%
+
+  // Required because we use flexbox and this inherently applies align-self: stretch
+  +border-radius($card-inner-border-radius)
+
+// Card image caps
+.card-img-top
+  width: 100%
+
+  // Required because we use flexbox and this inherently applies align-self: stretch
+  +border-top-radius($card-inner-border-radius)
+
+.card-img-bottom
+  width: 100%
+
+  // Required because we use flexbox and this inherently applies align-self: stretch
+  +border-bottom-radius($card-inner-border-radius)
+
+// Card deck
+
+.card-deck
+  display: flex
+  flex-direction: column
+
+  .card
+    margin-bottom: $card-deck-margin
+
+  +media-breakpoint-up(sm)
+    flex-flow: row wrap
+    margin-right: -$card-deck-margin
+    margin-left: -$card-deck-margin
+
+    .card
+      display: flex
+
+      // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
+      flex: 1 0 0%
+      flex-direction: column
+      margin-right: $card-deck-margin
+      margin-bottom: 0
+
+      // Override the default
+      margin-left: $card-deck-margin
+
+//
+// Card groups
+//
+
+.card-group
+  display: flex
+  flex-direction: column
+
+  // The child selector allows nested `.card` within `.card-group`
+  // to display properly.
+  > .card
+    margin-bottom: $card-group-margin
+
+  +media-breakpoint-up(sm)
+    flex-flow: row wrap
+
+    // The child selector allows nested `.card` within `.card-group`
+    // to display properly.
+    > .card
+      // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
+      flex: 1 0 0%
+      margin-bottom: 0
+
+      + .card
+        margin-left: 0
+        border-left: 0
+
+      // Handle rounded corners
+      @if $enable-rounded
+        &:first-child
+          +border-right-radius(0)
+
+          .card-img-top,
+          .card-header
+            border-top-right-radius: 0
+
+          .card-img-bottom,
+          .card-footer
+            border-bottom-right-radius: 0
+
+        &:last-child
+          +border-left-radius(0)
+
+          .card-img-top,
+          .card-header
+            border-top-left-radius: 0
+
+          .card-img-bottom,
+          .card-footer
+            border-bottom-left-radius: 0
+
+        &:only-child
+          +border-radius($card-border-radius)
+
+          .card-img-top,
+          .card-header
+            +border-top-radius($card-border-radius)
+
+          .card-img-bottom,
+          .card-footer
+            +border-bottom-radius($card-border-radius)
+
+        &:not(:first-child):not(:last-child):not(:only-child)
+          +border-radius(0)
+
+          .card-img-top,
+          .card-img-bottom,
+          .card-header,
+          .card-footer
+            +border-radius(0)
+
+//
+// Columns
+//
+
+.card-columns
+  .card
+    margin-bottom: $card-columns-margin
+
+  +media-breakpoint-up(sm)
+    column-count: $card-columns-count
+    column-gap: $card-columns-gap
+    orphans: 1
+    widows: 1
+
+    .card
+      display: inline-block
+
+      // Don't let them vertically span multiple columns
+      width: 100%
+
+      // Don't let their width change
+
+//
+// Accordion
+//
+
+.accordion
+  .card:not(:first-of-type):not(:last-of-type)
+    border-bottom: 0
+    border-radius: 0
+
+  .card:not(:first-of-type)
+    .card-header:first-child
+      border-radius: 0
+
+  .card:first-of-type
+    border-bottom: 0
+    border-bottom-right-radius: 0
+    border-bottom-left-radius: 0
+
+  .card:last-of-type
+    border-top-left-radius: 0
+    border-top-right-radius: 0

static/assets/bootstrap/sass/_carousel.sass

@@ -0,0 +1,218 @@
+// Notes on the classes:
+//
+// 1. The .carousel-item-left and .carousel-item-right is used to indicate where
+//    the active slide is heading.
+// 2. .active.carousel-item is the current slide.
+// 3. .active.carousel-item-left and .active.carousel-item-right is the current
+//    slide in its in-transition state. Only one of these occurs at a time.
+// 4. .carousel-item-next.carousel-item-left and .carousel-item-prev.carousel-item-right
+//    is the upcoming slide in transition.
+
+.carousel
+  position: relative
+
+.carousel-inner
+  position: relative
+  width: 100%
+  overflow: hidden
+
+.carousel-item
+  position: relative
+  display: none
+  align-items: center
+  width: 100%
+  backface-visibility: hidden
+  perspective: 1000px
+
+.carousel-item.active,
+.carousel-item-next,
+.carousel-item-prev
+  display: block
+
+  +transition($carousel-transition)
+
+.carousel-item-next,
+.carousel-item-prev
+  position: absolute
+  top: 0
+
+.carousel-item-next.carousel-item-left,
+.carousel-item-prev.carousel-item-right
+  transform: translateX(0)
+
+  @supports (transform-style: preserve-3d)
+    transform: translate3d(0, 0, 0)
+
+.carousel-item-next,
+.active.carousel-item-right
+  transform: translateX(100%)
+
+  @supports (transform-style: preserve-3d)
+    transform: translate3d(100%, 0, 0)
+
+.carousel-item-prev,
+.active.carousel-item-left
+  transform: translateX(-100%)
+
+  @supports (transform-style: preserve-3d)
+    transform: translate3d(-100%, 0, 0)
+
+//
+// Alternate transitions
+//
+
+.carousel-fade
+  .carousel-item
+    opacity: 0
+    transition-duration: .6s
+    transition-property: opacity
+
+  .carousel-item.active,
+  .carousel-item-next.carousel-item-left,
+  .carousel-item-prev.carousel-item-right
+    opacity: 1
+
+  .active.carousel-item-left,
+  .active.carousel-item-right
+    opacity: 0
+
+  .carousel-item-next,
+  .carousel-item-prev,
+  .carousel-item.active,
+  .active.carousel-item-left,
+  .active.carousel-item-prev
+    transform: translateX(0)
+
+    @supports (transform-style: preserve-3d)
+      transform: translate3d(0, 0, 0)
+
+//
+// Left/right controls for nav
+//
+
+.carousel-control-prev,
+.carousel-control-next
+  position: absolute
+  top: 0
+  bottom: 0
+
+  // Use flex for alignment (1-3)
+  display: flex
+
+  // 1. allow flex styles
+  align-items: center
+
+  // 2. vertically center contents
+  justify-content: center
+
+  // 3. horizontally center contents
+  width: $carousel-control-width
+  color: $carousel-control-color
+  text-align: center
+  opacity: $carousel-control-opacity
+
+  // We can't have a transition here because WebKit cancels the carousel
+  // animation if you trip this while in the middle of another animation.
+
+  // Hover/focus state
+  +hover-focus
+    color: $carousel-control-color
+    text-decoration: none
+    outline: 0
+    opacity: .9
+
+.carousel-control-prev
+  left: 0
+
+  @if $enable-gradients
+    background: linear-gradient(90deg, rgba($black, 0.25), rgba($black, 0.001))
+
+.carousel-control-next
+  right: 0
+
+  @if $enable-gradients
+    background: linear-gradient(270deg, rgba($black, 0.25), rgba($black, 0.001))
+
+// Icons for within
+.carousel-control-prev-icon,
+.carousel-control-next-icon
+  display: inline-block
+  width: $carousel-control-icon-width
+  height: $carousel-control-icon-width
+  background: transparent no-repeat center center
+  background-size: 100% 100%
+
+.carousel-control-prev-icon
+  background-image: $carousel-control-prev-icon-bg
+
+.carousel-control-next-icon
+  background-image: $carousel-control-next-icon-bg
+
+// Optional indicator pips
+//
+// Add an ordered list with the following class and add a list item for each
+// slide your carousel holds.
+
+.carousel-indicators
+  position: absolute
+  right: 0
+  bottom: 10px
+  left: 0
+  z-index: 15
+  display: flex
+  justify-content: center
+  padding-left: 0
+
+  // override <ol> default
+  // Use the .carousel-control's width as margin so we don't overlay those
+  margin-right: $carousel-control-width
+  margin-left: $carousel-control-width
+  list-style: none
+
+  li
+    position: relative
+    flex: 0 1 auto
+    width: $carousel-indicator-width
+    height: $carousel-indicator-height
+    margin-right: $carousel-indicator-spacer
+    margin-left: $carousel-indicator-spacer
+    text-indent: -999px
+    cursor: pointer
+    background-color: rgba($carousel-indicator-active-bg, 0.5)
+
+    // Use pseudo classes to increase the hit area by 10px on top and bottom.
+    &::before
+      position: absolute
+      top: -10px
+      left: 0
+      display: inline-block
+      width: 100%
+      height: 10px
+      content: ""
+
+    &::after
+      position: absolute
+      bottom: -10px
+      left: 0
+      display: inline-block
+      width: 100%
+      height: 10px
+      content: ""
+
+  .active
+    background-color: $carousel-indicator-active-bg
+
+// Optional captions
+//
+//
+
+.carousel-caption
+  position: absolute
+  right: (100% - $carousel-caption-width) / 2
+  bottom: 20px
+  left: (100% - $carousel-caption-width) / 2
+  z-index: 10
+  padding-top: 20px
+  padding-bottom: 20px
+  color: $carousel-caption-color
+  text-align: center

static/assets/bootstrap/sass/_close.sass

@@ -0,0 +1,32 @@
+.close
+  float: right
+  font-size: $close-font-size
+  font-weight: $close-font-weight
+  line-height: 1
+  color: $close-color
+  text-shadow: $close-text-shadow
+  opacity: .5
+
+  &:not(:disabled):not(.disabled)
+    +hover-focus
+      color: $close-color
+      text-decoration: none
+      opacity: .75
+
+
+    // Opinionated: add "hand" cursor to non-disabled .close elements
+    cursor: pointer
+
+// Additional properties for button version
+// iOS requires the button element instead of an anchor tag.
+// If you want the anchor version, it requires `href="#"`.
+// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
+
+// stylelint-disable property-no-vendor-prefix, selector-no-qualifying-type
+button.close
+  padding: 0
+  background-color: transparent
+  border: 0
+  -webkit-appearance: none
+
+// stylelint-enable

static/assets/bootstrap/sass/_code.sass

@@ -0,0 +1,43 @@
+// Inline code
+code
+  font-size: $code-font-size
+  color: $code-color
+  word-break: break-word
+
+  // Streamline the style when inside anchors to avoid broken underline and more
+  a > &
+    color: inherit
+
+// User input typically entered via keyboard
+kbd
+  padding: $kbd-padding-y $kbd-padding-x
+  font-size: $kbd-font-size
+  color: $kbd-color
+  background-color: $kbd-bg
+
+  +border-radius($border-radius-sm)
+  +box-shadow($kbd-box-shadow)
+
+  kbd
+    padding: 0
+    font-size: 100%
+    font-weight: $nested-kbd-font-weight
+
+    +box-shadow(none)
+
+// Blocks of code
+pre
+  display: block
+  font-size: $code-font-size
+  color: $pre-color
+
+  // Account for some code outputs that place code tags in pre tags
+  code
+    font-size: inherit
+    color: inherit
+    word-break: normal
+
+// Enable scrollable blocks of code
+.pre-scrollable
+  max-height: $pre-scrollable-max-height
+  overflow-y: scroll

static/assets/bootstrap/sass/_custom-forms.sass

@@ -0,0 +1,416 @@
+// Embedded icons from Open Iconic.
+// Released under MIT and copyright 2014 Waybury.
+// https://useiconic.com/open
+
+// Checkboxes and radios
+//
+// Base class takes care of all the key behavioral aspects.
+
+.custom-control
+  position: relative
+  display: block
+  min-height: 1rem * $line-height-base
+  padding-left: $custom-control-gutter
+
+.custom-control-inline
+  display: inline-flex
+  margin-right: $custom-control-spacer-x
+
+.custom-control-input
+  position: absolute
+  z-index: -1
+
+  // Put the input behind the label so it doesn't overlay text
+  opacity: 0
+
+  &:checked ~ .custom-control-label::before
+    color: $custom-control-indicator-checked-color
+
+    +gradient-bg($custom-control-indicator-checked-bg)
+    +box-shadow($custom-control-indicator-checked-box-shadow)
+
+  &:focus ~ .custom-control-label::before
+    // the mixin is not used here to make sure there is feedback
+    box-shadow: $custom-control-indicator-focus-box-shadow
+
+  &:active ~ .custom-control-label::before
+    color: $custom-control-indicator-active-color
+    background-color: $custom-control-indicator-active-bg
+
+    +box-shadow($custom-control-indicator-active-box-shadow)
+
+  &:disabled
+    ~ .custom-control-label
+      color: $custom-control-label-disabled-color
+
+      &::before
+        background-color: $custom-control-indicator-disabled-bg
+
+// Custom control indicators
+//
+// Build the custom controls out of pseudo-elements.
+
+.custom-control-label
+  position: relative
+  margin-bottom: 0
+
+  // Background-color and (when enabled) gradient
+  &::before
+    position: absolute
+    top: ($line-height-base - $custom-control-indicator-size) / 2
+    left: -$custom-control-gutter
+    display: block
+    width: $custom-control-indicator-size
+    height: $custom-control-indicator-size
+    pointer-events: none
+    content: ""
+    user-select: none
+    background-color: $custom-control-indicator-bg
+
+    +box-shadow($custom-control-indicator-box-shadow)
+
+  // Foreground (icon)
+  &::after
+    position: absolute
+    top: ($line-height-base - $custom-control-indicator-size) / 2
+    left: -$custom-control-gutter
+    display: block
+    width: $custom-control-indicator-size
+    height: $custom-control-indicator-size
+    content: ""
+    background-repeat: no-repeat
+    background-position: center center
+    background-size: $custom-control-indicator-bg-size
+
+// Checkboxes
+//
+// Tweak just a few things for checkboxes.
+
+.custom-checkbox
+  .custom-control-label::before
+    +border-radius($custom-checkbox-indicator-border-radius)
+
+  .custom-control-input:checked ~ .custom-control-label
+    &::before
+      +gradient-bg($custom-control-indicator-checked-bg)
+
+    &::after
+      background-image: $custom-checkbox-indicator-icon-checked
+
+  .custom-control-input:indeterminate ~ .custom-control-label
+    &::before
+      +gradient-bg($custom-checkbox-indicator-indeterminate-bg)
+      +box-shadow($custom-checkbox-indicator-indeterminate-box-shadow)
+
+    &::after
+      background-image: $custom-checkbox-indicator-icon-indeterminate
+
+  .custom-control-input:disabled
+    &:checked ~ .custom-control-label::before
+      background-color: $custom-control-indicator-checked-disabled-bg
+
+    &:indeterminate ~ .custom-control-label::before
+      background-color: $custom-control-indicator-checked-disabled-bg
+
+// Radios
+//
+// Tweak just a few things for radios.
+
+.custom-radio
+  .custom-control-label::before
+    border-radius: $custom-radio-indicator-border-radius
+
+  .custom-control-input:checked ~ .custom-control-label
+    &::before
+      +gradient-bg($custom-control-indicator-checked-bg)
+
+    &::after
+      background-image: $custom-radio-indicator-icon-checked
+
+  .custom-control-input:disabled
+    &:checked ~ .custom-control-label::before
+      background-color: $custom-control-indicator-checked-disabled-bg
+
+// Select
+//
+// Replaces the browser default select with a custom one, mostly pulled from
+// https://primer.github.io/.
+//
+
+.custom-select
+  display: inline-block
+  width: 100%
+  height: $custom-select-height
+  padding: $custom-select-padding-y ($custom-select-padding-x + $custom-select-indicator-padding) $custom-select-padding-y $custom-select-padding-x
+  line-height: $custom-select-line-height
+  color: $custom-select-color
+  vertical-align: middle
+  background: $custom-select-bg $custom-select-indicator no-repeat right $custom-select-padding-x center
+  background-size: $custom-select-bg-size
+  border: $custom-select-border-width solid $custom-select-border-color
+
+  @if $enable-rounded
+    border-radius: $custom-select-border-radius
+  @else
+    border-radius: 0
+
+  +box-shadow($custom-select-box-shadow)
+
+  appearance: none
+
+  &:focus
+    border-color: $custom-select-focus-border-color
+    outline: 0
+
+    @if $enable-shadows
+      box-shadow: $custom-select-box-shadow, $custom-select-focus-box-shadow
+    @else
+      box-shadow: $custom-select-focus-box-shadow
+
+    &::-ms-value
+      // For visual consistency with other platforms/browsers,
+      // suppress the default white text on blue background highlight given to
+      // the selected option text when the (still closed) <select> receives focus
+      // in IE and (under certain conditions) Edge.
+      // See https://github.com/twbs/bootstrap/issues/19398.
+      color: $input-color
+      background-color: $input-bg
+
+  &[multiple],
+  &[size]:not([size="1"])
+    height: auto
+    padding-right: $custom-select-padding-x
+    background-image: none
+
+  &:disabled
+    color: $custom-select-disabled-color
+    background-color: $custom-select-disabled-bg
+
+  // Hides the default caret in IE11
+  &::-ms-expand
+    opacity: 0
+
+.custom-select-sm
+  height: $custom-select-height-sm
+  padding-top: $custom-select-padding-y
+  padding-bottom: $custom-select-padding-y
+  font-size: $custom-select-font-size-sm
+
+.custom-select-lg
+  height: $custom-select-height-lg
+  padding-top: $custom-select-padding-y
+  padding-bottom: $custom-select-padding-y
+  font-size: $custom-select-font-size-lg
+
+// File
+//
+// Custom file input.
+
+.custom-file
+  position: relative
+  display: inline-block
+  width: 100%
+  height: $custom-file-height
+  margin-bottom: 0
+
+.custom-file-input
+  position: relative
+  z-index: 2
+  width: 100%
+  height: $custom-file-height
+  margin: 0
+  opacity: 0
+
+  &:focus ~ .custom-file-label
+    border-color: $custom-file-focus-border-color
+    box-shadow: $custom-file-focus-box-shadow
+
+    &::after
+      border-color: $custom-file-focus-border-color
+
+  &:disabled ~ .custom-file-label
+    background-color: $custom-file-disabled-bg
+
+  @each $lang, $value in $custom-file-text
+    &:lang(#{$lang}) ~ .custom-file-label::after
+      content: $value
+
+.custom-file-label
+  position: absolute
+  top: 0
+  right: 0
+  left: 0
+  z-index: 1
+  height: $custom-file-height
+  padding: $custom-file-padding-y $custom-file-padding-x
+  line-height: $custom-file-line-height
+  color: $custom-file-color
+  background-color: $custom-file-bg
+  border: $custom-file-border-width solid $custom-file-border-color
+
+  +border-radius($custom-file-border-radius)
+  +box-shadow($custom-file-box-shadow)
+
+  &::after
+    position: absolute
+    top: 0
+    right: 0
+    bottom: 0
+    z-index: 3
+    display: block
+    height: $custom-file-height-inner
+    padding: $custom-file-padding-y $custom-file-padding-x
+    line-height: $custom-file-line-height
+    color: $custom-file-button-color
+    content: "Browse"
+
+    +gradient-bg($custom-file-button-bg)
+
+    border-left: $custom-file-border-width solid $custom-file-border-color
+
+    +border-radius(0 $custom-file-border-radius $custom-file-border-radius 0)
+
+// Range
+//
+// Style range inputs the same across browsers. Vendor-specific rules for pseudo
+// elements cannot be mixed. As such, there are no shared styles for focus or
+// active states on prefixed selectors.
+
+.custom-range
+  width: 100%
+  padding-left: 0
+
+  // Firefox specific
+  background-color: transparent
+  appearance: none
+
+  &:focus
+    outline: none
+
+  &::-moz-focus-outer
+    border: 0
+
+  &::-webkit-slider-thumb
+    width: $custom-range-thumb-width
+    height: $custom-range-thumb-height
+    margin-top: -($custom-range-thumb-width * 0.25)
+
+    // Webkit specific?
+    +gradient-bg($custom-range-thumb-bg)
+
+    border: $custom-range-thumb-border
+
+    +border-radius($custom-range-thumb-border-radius)
+    +box-shadow($custom-range-thumb-box-shadow)
+    +transition($custom-forms-transition)
+
+    appearance: none
+
+    &:focus
+      outline: none
+      box-shadow: $custom-range-thumb-focus-box-shadow
+
+      // No mixin for focus accessibility
+
+    &:active
+      +gradient-bg($custom-range-thumb-active-bg)
+
+  &::-webkit-slider-runnable-track
+    width: $custom-range-track-width
+    height: $custom-range-track-height
+    color: transparent
+
+    // Why?
+    cursor: $custom-range-track-cursor
+    background-color: $custom-range-track-bg
+    border-color: transparent
+
+    +border-radius($custom-range-track-border-radius)
+    +box-shadow($custom-range-track-box-shadow)
+
+  &::-moz-range-thumb
+    width: $custom-range-thumb-width
+    height: $custom-range-thumb-height
+
+    +gradient-bg($custom-range-thumb-bg)
+
+    border: $custom-range-thumb-border
+
+    +border-radius($custom-range-thumb-border-radius)
+    +box-shadow($custom-range-thumb-box-shadow)
+    +transition($custom-forms-transition)
+
+    appearance: none
+
+    &:focus
+      outline: none
+      box-shadow: $custom-range-thumb-focus-box-shadow
+
+      // No mixin for focus accessibility
+
+    &:active
+      +gradient-bg($custom-range-thumb-active-bg)
+
+  &::-moz-range-track
+    width: $custom-range-track-width
+    height: $custom-range-track-height
+    color: transparent
+    cursor: $custom-range-track-cursor
+    background-color: $custom-range-track-bg
+    border-color: transparent
+
+    // Firefox specific?
+    +border-radius($custom-range-track-border-radius)
+    +box-shadow($custom-range-track-box-shadow)
+
+  &::-ms-thumb
+    width: $custom-range-thumb-width
+    height: $custom-range-thumb-height
+
+    +gradient-bg($custom-range-thumb-bg)
+
+    border: $custom-range-thumb-border
+
+    +border-radius($custom-range-thumb-border-radius)
+    +box-shadow($custom-range-thumb-box-shadow)
+    +transition($custom-forms-transition)
+
+    appearance: none
+
+    &:focus
+      outline: none
+      box-shadow: $custom-range-thumb-focus-box-shadow
+
+      // No mixin for focus accessibility
+
+    &:active
+      +gradient-bg($custom-range-thumb-active-bg)
+
+  &::-ms-track
+    width: $custom-range-track-width
+    height: $custom-range-track-height
+    color: transparent
+    cursor: $custom-range-track-cursor
+    background-color: transparent
+    border-color: transparent
+    border-width: $custom-range-thumb-height * 0.5
+
+    +box-shadow($custom-range-track-box-shadow)
+
+  &::-ms-fill-lower
+    background-color: $custom-range-track-bg
+
+    +border-radius($custom-range-track-border-radius)
+
+  &::-ms-fill-upper
+    margin-right: 15px
+
+    // arbitrary?
+    background-color: $custom-range-track-bg
+
+    +border-radius($custom-range-track-border-radius)
+
+.custom-control-label::before,
+.custom-file-label,
+.custom-select
+  +transition($custom-forms-transition)

static/assets/bootstrap/sass/_dropdown.sass

@@ -0,0 +1,170 @@
+// The dropdown wrapper (`<div>`)
+.dropup,
+.dropright,
+.dropdown,
+.dropleft
+  position: relative
+
+.dropdown-toggle
+  // Generate the caret automatically
+  +caret
+
+// The dropdown menu
+.dropdown-menu
+  position: absolute
+  top: 100%
+  left: 0
+  z-index: $zindex-dropdown
+  display: none
+
+  // none by default, but block on "open" of the menu
+  float: left
+  min-width: $dropdown-min-width
+  padding: $dropdown-padding-y 0
+  margin: $dropdown-spacer 0 0
+
+  // override default ul
+  font-size: $font-size-base
+
+  // Redeclare because nesting can cause inheritance issues
+  color: $body-color
+  text-align: left
+
+  // Ensures proper alignment if parent has it changed (e.g., modal footer)
+  list-style: none
+  background-color: $dropdown-bg
+  background-clip: padding-box
+  border: $dropdown-border-width solid $dropdown-border-color
+
+  +border-radius($dropdown-border-radius)
+  +box-shadow($dropdown-box-shadow)
+
+.dropdown-menu-right
+  right: 0
+  left: auto
+
+// Allow for dropdowns to go bottom up (aka, dropup-menu)
+// Just add .dropup after the standard .dropdown class and you're set.
+.dropup
+  .dropdown-menu
+    top: auto
+    bottom: 100%
+    margin-top: 0
+    margin-bottom: $dropdown-spacer
+
+  .dropdown-toggle
+    +caret(up)
+
+.dropright
+  .dropdown-menu
+    top: 0
+    right: auto
+    left: 100%
+    margin-top: 0
+    margin-left: $dropdown-spacer
+
+  .dropdown-toggle
+    +caret(right)
+
+    &::after
+      vertical-align: 0
+
+.dropleft
+  .dropdown-menu
+    top: 0
+    right: 100%
+    left: auto
+    margin-top: 0
+    margin-right: $dropdown-spacer
+
+  .dropdown-toggle
+    +caret(left)
+
+    &::before
+      vertical-align: 0
+
+// When enabled Popper.js, reset basic dropdown position
+// stylelint-disable no-duplicate-selectors
+.dropdown-menu
+  &[x-placement^="top"],
+  &[x-placement^="right"],
+  &[x-placement^="bottom"],
+  &[x-placement^="left"]
+    right: auto
+    bottom: auto
+
+// stylelint-enable no-duplicate-selectors
+
+// Dividers (basically an `<hr>`) within the dropdown
+.dropdown-divider
+  +nav-divider($dropdown-divider-bg)
+
+// Links, buttons, and more within the dropdown menu
+//
+// `<button>`-specific styles are denoted with `// For <button>s`
+.dropdown-item
+  display: block
+  width: 100%
+
+  // For `<button>`s
+  padding: $dropdown-item-padding-y $dropdown-item-padding-x
+  clear: both
+  font-weight: $font-weight-normal
+  color: $dropdown-link-color
+  text-align: inherit
+
+  // For `<button>`s
+  white-space: nowrap
+
+  // prevent links from randomly breaking onto new lines
+  background-color: transparent
+
+  // For `<button>`s
+  border: 0
+
+  // For `<button>`s
+
+  +hover-focus
+    color: $dropdown-link-hover-color
+    text-decoration: none
+
+    +gradient-bg($dropdown-link-hover-bg)
+
+
+  &.active,
+  &:active
+    color: $dropdown-link-active-color
+    text-decoration: none
+
+    +gradient-bg($dropdown-link-active-bg)
+
+  &.disabled,
+  &:disabled
+    color: $dropdown-link-disabled-color
+    background-color: transparent
+
+    // Remove CSS gradients if they're enabled
+    @if $enable-gradients
+      background-image: none
+
+.dropdown-menu.show
+  display: block
+
+// Dropdown section headers
+.dropdown-header
+  display: block
+  padding: $dropdown-padding-y $dropdown-item-padding-x
+  margin-bottom: 0
+
+  // for use with heading elements
+  font-size: $font-size-sm
+  color: $dropdown-header-color
+  white-space: nowrap
+
+  // as with > li > a
+
+// Dropdown text
+.dropdown-item-text
+  display: block
+  padding: $dropdown-item-padding-y $dropdown-item-padding-x
+  color: $dropdown-link-color

static/assets/bootstrap/sass/_forms.sass

@@ -0,0 +1,306 @@
+// stylelint-disable selector-no-qualifying-type
+
+//
+// Textual form controls
+//
+
+.form-control
+  display: block
+  width: 100%
+  padding: $input-padding-y $input-padding-x
+  font-size: $font-size-base
+  line-height: $input-line-height
+  color: $input-color
+  background-color: $input-bg
+  background-clip: padding-box
+  border: $input-border-width solid $input-border-color
+
+  // Note: This has no effect on <select>s in some browsers, due to the limited stylability of `<select>`s in CSS.
+  @if $enable-rounded
+    // Manually use the if/else instead of the mixin to account for iOS override
+    border-radius: $input-border-radius
+  @else
+    // Otherwise undo the iOS default
+    border-radius: 0
+
+  +box-shadow($input-box-shadow)
+  +transition($input-transition)
+
+  // Unstyle the caret on `<select>`s in IE10+.
+  &::-ms-expand
+    background-color: transparent
+    border: 0
+
+  // Customize the `:focus` state to imitate native WebKit styles.
+  +form-control-focus
+
+  // Placeholder
+  &::placeholder
+    color: $input-placeholder-color
+
+    // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526.
+    opacity: 1
+
+  // Disabled and read-only inputs
+  //
+  // HTML5 says that controls under a fieldset > legend:first-child won't be
+  // disabled if the fieldset is disabled. Due to implementation difficulty, we
+  // don't honor that edge case; we style them as disabled anyway.
+  &:disabled,
+  &[readonly]
+    background-color: $input-disabled-bg
+
+    // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655.
+    opacity: 1
+
+select.form-control
+  &:not([size]):not([multiple])
+    height: $input-height
+
+  &:focus::-ms-value
+    // Suppress the nested default white text on blue background highlight given to
+    // the selected option text when the (still closed) <select> receives focus
+    // in IE and (under certain conditions) Edge, as it looks bad and cannot be made to
+    // match the appearance of the native widget.
+    // See https://github.com/twbs/bootstrap/issues/19398.
+    color: $input-color
+    background-color: $input-bg
+
+// Make file inputs better match text inputs by forcing them to new lines.
+.form-control-file,
+.form-control-range
+  display: block
+  width: 100%
+
+//
+// Labels
+//
+
+// For use with horizontal and inline forms, when you need the label (or legend)
+// text to align with the form controls.
+.col-form-label
+  padding-top: calc(#{$input-padding-y} + #{$input-border-width})
+  padding-bottom: calc(#{$input-padding-y} + #{$input-border-width})
+  margin-bottom: 0
+
+  // Override the `<label>/<legend>` default
+  font-size: inherit
+
+  // Override the `<legend>` default
+  line-height: $input-line-height
+
+.col-form-label-lg
+  padding-top: calc(#{$input-padding-y-lg} + #{$input-border-width})
+  padding-bottom: calc(#{$input-padding-y-lg} + #{$input-border-width})
+  font-size: $font-size-lg
+  line-height: $input-line-height-lg
+
+.col-form-label-sm
+  padding-top: calc(#{$input-padding-y-sm} + #{$input-border-width})
+  padding-bottom: calc(#{$input-padding-y-sm} + #{$input-border-width})
+  font-size: $font-size-sm
+  line-height: $input-line-height-sm
+
+// Readonly controls as plain text
+//
+// Apply class to a readonly input to make it appear like regular plain
+// text (without any border, background color, focus indicator)
+
+.form-control-plaintext
+  display: block
+  width: 100%
+  padding-top: $input-padding-y
+  padding-bottom: $input-padding-y
+  margin-bottom: 0
+
+  // match inputs if this class comes on inputs with default margins
+  line-height: $input-line-height
+  color: $input-plaintext-color
+  background-color: transparent
+  border: solid transparent
+  border-width: $input-border-width 0
+
+  &.form-control-sm,
+  &.form-control-lg
+    padding-right: 0
+    padding-left: 0
+
+// Form control sizing
+//
+// Build on `.form-control` with modifier classes to decrease or increase the
+// height and font-size of form controls.
+//
+// The `.form-group-* form-control` variations are sadly duplicated to avoid the
+// issue documented in https://github.com/twbs/bootstrap/issues/15074.
+
+.form-control-sm
+  padding: $input-padding-y-sm $input-padding-x-sm
+  font-size: $font-size-sm
+  line-height: $input-line-height-sm
+
+  +border-radius($input-border-radius-sm)
+
+select.form-control-sm
+  &:not([size]):not([multiple])
+    height: $input-height-sm
+
+.form-control-lg
+  padding: $input-padding-y-lg $input-padding-x-lg
+  font-size: $font-size-lg
+  line-height: $input-line-height-lg
+
+  +border-radius($input-border-radius-lg)
+
+select.form-control-lg
+  &:not([size]):not([multiple])
+    height: $input-height-lg
+
+// Form groups
+//
+// Designed to help with the organization and spacing of vertical forms. For
+// horizontal forms, use the predefined grid classes.
+
+.form-group
+  margin-bottom: $form-group-margin-bottom
+
+.form-text
+  display: block
+  margin-top: $form-text-margin-top
+
+// Form grid
+//
+// Special replacement for our grid system's `.row` for tighter form layouts.
+
+.form-row
+  display: flex
+  flex-wrap: wrap
+  margin-right: -5px
+  margin-left: -5px
+
+  > .col,
+  > [class*="col-"]
+    padding-right: 5px
+    padding-left: 5px
+
+// Checkboxes and radios
+//
+// Indent the labels to position radios/checkboxes as hanging controls.
+
+.form-check
+  position: relative
+  display: block
+  padding-left: $form-check-input-gutter
+
+.form-check-input
+  position: absolute
+  margin-top: $form-check-input-margin-y
+  margin-left: -$form-check-input-gutter
+
+  &:disabled ~ .form-check-label
+    color: $text-muted
+
+.form-check-label
+  margin-bottom: 0
+
+  // Override default `<label>` bottom margin
+
+.form-check-inline
+  display: inline-flex
+  align-items: center
+  padding-left: 0
+
+  // Override base .form-check
+  margin-right: $form-check-inline-margin-x
+
+  // Undo .form-check-input defaults and add some `margin-right`.
+  .form-check-input
+    position: static
+    margin-top: 0
+    margin-right: $form-check-inline-input-margin-x
+    margin-left: 0
+
+// Form validation
+//
+// Provide feedback to users when form field values are valid or invalid. Works
+// primarily for client-side validation via scoped `:invalid` and `:valid`
+// pseudo-classes but also includes `.is-invalid` and `.is-valid` classes for
+// server side validation.
+
++form-validation-state("valid", $form-feedback-valid-color)
++form-validation-state("invalid", $form-feedback-invalid-color)
+
+// Inline forms
+//
+// Make forms appear inline(-block) by adding the `.form-inline` class. Inline
+// forms begin stacked on extra small (mobile) devices and then go inline when
+// viewports reach <768px.
+//
+// Requires wrapping inputs and labels with `.form-group` for proper display of
+// default HTML form controls and our custom form controls (e.g., input groups).
+
+.form-inline
+  display: flex
+  flex-flow: row wrap
+  align-items: center
+
+  // Prevent shorter elements from growing to same height as others (e.g., small buttons growing to normal sized button height)
+
+  // Because we use flex, the initial sizing of checkboxes is collapsed and
+  // doesn't occupy the full-width (which is what we want for xs grid tier),
+  // so we force that here.
+  .form-check
+    width: 100%
+
+  // Kick in the inline
+  +media-breakpoint-up(sm)
+    label
+      display: flex
+      align-items: center
+      justify-content: center
+      margin-bottom: 0
+
+    // Inline-block all the things for "inline"
+    .form-group
+      display: flex
+      flex: 0 0 auto
+      flex-flow: row wrap
+      align-items: center
+      margin-bottom: 0
+
+    // Allow folks to *not* use `.form-group`
+    .form-control
+      display: inline-block
+      width: auto
+
+      // Prevent labels from stacking above inputs in `.form-group`
+      vertical-align: middle
+
+    // Make static controls behave like regular ones
+    .form-control-plaintext
+      display: inline-block
+
+    .input-group,
+    .custom-select
+      width: auto
+
+    // Remove default margin on radios/checkboxes that were used for stacking, and
+    // then undo the floating of radios and checkboxes to match.
+    .form-check
+      display: flex
+      align-items: center
+      justify-content: center
+      width: auto
+      padding-left: 0
+
+    .form-check-input
+      position: relative
+      margin-top: 0
+      margin-right: $form-check-input-margin-x
+      margin-left: 0
+
+    .custom-control
+      align-items: center
+      justify-content: center
+
+    .custom-control-label
+      margin-bottom: 0

static/assets/bootstrap/sass/_functions.sass

@@ -0,0 +1,76 @@
+// Bootstrap functions
+//
+// Utility mixins and functions for evaluating source code across our variables, maps, and mixins.
+
+// Ascending
+// Used to evaluate Sass maps like our grid breakpoints.
+=_assert-ascending($map, $map-name)
+  $prev-key: null
+  $prev-num: null
+
+  @each $key, $num in $map
+    @if $prev-num == null
+      // Do nothing
+    @else if not comparable($prev-num, $num)
+      @warn "Potentially invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} whose unit makes it incomparable to #{$prev-num}, the value of the previous key '#{$prev-key}' !"
+    @else if $prev-num >= $num
+      @warn "Invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} which isn't greater than #{$prev-num}, the value of the previous key '#{$prev-key}' !"
+
+    $prev-key: $key
+    $prev-num: $num
+
+// Starts at zero
+// Another grid mixin that ensures the min-width of the lowest breakpoint starts at 0.
+=_assert-starts-at-zero($map)
+  $values: map-values($map)
+  $first-value: nth($values, 1)
+
+  @if $first-value != 0
+    @warn "First breakpoint in `$grid-breakpoints` must start at 0, but starts at #{$first-value}."
+
+// Replace `$search` with `$replace` in `$string`
+// Used on our SVG icon backgrounds for custom forms.
+//
+// @author Hugo Giraudel
+// @param {String} $string - Initial string
+// @param {String} $search - Substring to replace
+// @param {String} $replace ('') - New value
+// @return {String} - Updated string
+@function str-replace($string, $search, $replace: "")
+  $index: str-index($string, $search)
+
+  @if $index
+    @return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace)
+
+  @return $string
+
+// Color contrast
+@function color-yiq($color)
+  $r: red($color)
+  $g: green($color)
+  $b: blue($color)
+
+  $yiq: ($r * 299 + $g * 587 + $b * 114) / 1000
+
+  @if $yiq >= $yiq-contrasted-threshold
+    @return $yiq-text-dark
+  @else
+    @return $yiq-text-light
+
+// Retrieve color Sass maps
+@function color($key: "blue")
+  @return map-get($colors, $key)
+
+@function theme-color($key: "primary")
+  @return map-get($theme-colors, $key)
+
+@function gray($key: "100")
+  @return map-get($grays, $key)
+
+// Request a theme color level
+@function theme-color-level($color-name: "primary", $level: 0)
+  $color: theme-color($color-name)
+  $color-base: if($level > 0, $black, $white)
+  $level: abs($level)
+
+  @return mix($color-base, $color, $level * $theme-color-interval)

static/assets/bootstrap/sass/_grid.sass

@@ -0,0 +1,43 @@
+// Container widths
+//
+// Set the container width, and override it for fixed navbars in media queries.
+
+@if $enable-grid-classes
+  .container
+    +make-container
+    +make-container-max-widths
+
+// Fluid container
+//
+// Utilizes the mixin meant for fixed width containers, but with 100% width for
+// fluid, full width layouts.
+
+@if $enable-grid-classes
+  .container-fluid
+    +make-container
+
+// Row
+//
+// Rows contain and clear the floats of your columns.
+
+@if $enable-grid-classes
+  .row
+    +make-row
+
+  // Remove the negative margin from default .row, then the horizontal padding
+  // from all immediate children columns (to prevent runaway style inheritance).
+  .no-gutters
+    margin-right: 0
+    margin-left: 0
+
+    > .col,
+    > [class*="col-"]
+      padding-right: 0
+      padding-left: 0
+
+// Columns
+//
+// Common styles for small and large grid columns
+
+@if $enable-grid-classes
+  +make-grid-columns

static/assets/bootstrap/sass/_images.sass

@@ -0,0 +1,37 @@
+// Responsive images (ensure images don't scale beyond their parents)
+//
+// This is purposefully opt-in via an explicit class rather than being the default for all `<img>`s.
+// We previously tried the "images are responsive by default" approach in Bootstrap v2,
+// and abandoned it in Bootstrap v3 because it breaks lots of third-party widgets (including Google Maps)
+// which weren't expecting the images within themselves to be involuntarily resized.
+// See also https://github.com/twbs/bootstrap/issues/18178
+.img-fluid
+  +img-fluid
+
+// Image thumbnails
+.img-thumbnail
+  padding: $thumbnail-padding
+  background-color: $thumbnail-bg
+  border: $thumbnail-border-width solid $thumbnail-border-color
+
+  +border-radius($thumbnail-border-radius)
+  +box-shadow($thumbnail-box-shadow)
+
+  // Keep them at most 100% wide
+  +img-fluid
+
+//
+// Figures
+//
+
+.figure
+  // Ensures the caption's text aligns with the image.
+  display: inline-block
+
+.figure-img
+  margin-bottom: $spacer / 2
+  line-height: 1
+
+.figure-caption
+  font-size: $figure-caption-font-size
+  color: $figure-caption-color

static/assets/bootstrap/sass/_input-group.sass

@@ -0,0 +1,159 @@
+// stylelint-disable selector-no-qualifying-type
+
+//
+// Base styles
+//
+
+.input-group
+  position: relative
+  display: flex
+  flex-wrap: wrap
+
+  // For form validation feedback
+  align-items: stretch
+  width: 100%
+
+  > .form-control,
+  > .custom-select,
+  > .custom-file
+    position: relative
+
+    // For focus state's z-index
+    flex: 1 1 auto
+
+    // Add width 1% and flex-basis auto to ensure that button will not wrap out
+    // the column. Applies to IE Edge+ and Firefox. Chrome does not require this.
+    width: 1%
+    margin-bottom: 0
+
+    + .form-control,
+    + .custom-select,
+    + .custom-file
+      margin-left: -$input-border-width
+
+  // Bring the "active" form control to the top of surrounding elements
+  > .form-control:focus,
+  > .custom-select:focus,
+  > .custom-file .custom-file-input:focus ~ .custom-file-label
+    z-index: 3
+
+  > .form-control,
+  > .custom-select
+    &:not(:last-child)
+      +border-right-radius(0)
+
+    &:not(:first-child)
+      +border-left-radius(0)
+
+  // Custom file inputs have more complex markup, thus requiring different
+  // border-radius overrides.
+  > .custom-file
+    display: flex
+    align-items: center
+
+    &:not(:last-child) .custom-file-label,
+    &:not(:last-child) .custom-file-label::after
+      +border-right-radius(0)
+
+    &:not(:first-child) .custom-file-label
+      +border-left-radius(0)
+
+// Prepend and append
+//
+// While it requires one extra layer of HTML for each, dedicated prepend and
+// append elements allow us to 1) be less clever, 2) simplify our selectors, and
+// 3) support HTML5 form validation.
+
+.input-group-prepend,
+.input-group-append
+  display: flex
+
+  // Ensure buttons are always above inputs for more visually pleasing borders.
+  // This isn't needed for `.input-group-text` since it shares the same border-color
+  // as our inputs.
+  .btn
+    position: relative
+    z-index: 2
+
+  .btn + .btn,
+  .btn + .input-group-text,
+  .input-group-text + .input-group-text,
+  .input-group-text + .btn
+    margin-left: -$input-border-width
+
+.input-group-prepend
+  margin-right: -$input-border-width
+
+.input-group-append
+  margin-left: -$input-border-width
+
+// Textual addons
+//
+// Serves as a catch-all element for any text or radio/checkbox input you wish
+// to prepend or append to an input.
+
+.input-group-text
+  display: flex
+  align-items: center
+  padding: $input-padding-y $input-padding-x
+  margin-bottom: 0
+
+  // Allow use of <label> elements by overriding our default margin-bottom
+  font-size: $font-size-base
+
+  // Match inputs
+  font-weight: $font-weight-normal
+  line-height: $input-line-height
+  color: $input-group-addon-color
+  text-align: center
+  white-space: nowrap
+  background-color: $input-group-addon-bg
+  border: $input-border-width solid $input-group-addon-border-color
+
+  +border-radius($input-border-radius)
+
+  // Nuke default margins from checkboxes and radios to vertically center within.
+  input[type="radio"],
+  input[type="checkbox"]
+    margin-top: 0
+
+// Sizing
+//
+// Remix the default form control sizing classes into new ones for easier
+// manipulation.
+
+.input-group-lg > .form-control,
+.input-group-lg > .input-group-prepend > .input-group-text,
+.input-group-lg > .input-group-append > .input-group-text,
+.input-group-lg > .input-group-prepend > .btn,
+.input-group-lg > .input-group-append > .btn
+  @extend .form-control-lg
+
+.input-group-sm > .form-control,
+.input-group-sm > .input-group-prepend > .input-group-text,
+.input-group-sm > .input-group-append > .input-group-text,
+.input-group-sm > .input-group-prepend > .btn,
+.input-group-sm > .input-group-append > .btn
+  @extend .form-control-sm
+
+// Prepend and append rounded corners
+//
+// These rulesets must come after the sizing ones to properly override sm and lg
+// border-radius values when extending. They're more specific than we'd like
+// with the `.input-group >` part, but without it, we cannot override the sizing.
+
+.input-group > .input-group-prepend > .btn,
+.input-group > .input-group-prepend > .input-group-text,
+.input-group > .input-group-append:not(:last-child) > .btn,
+.input-group > .input-group-append:not(:last-child) > .input-group-text,
+.input-group > .input-group-append:last-child > .btn:not(:last-child):not(.dropdown-toggle),
+.input-group > .input-group-append:last-child > .input-group-text:not(:last-child)
+  +border-right-radius(0)
+
+.input-group > .input-group-append > .btn,
+.input-group > .input-group-append > .input-group-text,
+.input-group > .input-group-prepend:not(:first-child) > .btn,
+.input-group > .input-group-prepend:not(:first-child) > .input-group-text,
+.input-group > .input-group-prepend:first-child > .btn:not(:first-child),
+.input-group > .input-group-prepend:first-child > .input-group-text:not(:first-child)
+  +border-left-radius(0)

static/assets/bootstrap/sass/_jumbotron.sass

@@ -0,0 +1,15 @@
+.jumbotron
+  padding: $jumbotron-padding ($jumbotron-padding / 2)
+  margin-bottom: $jumbotron-padding
+  background-color: $jumbotron-bg
+
+  +border-radius($border-radius-lg)
+
+  +media-breakpoint-up(sm)
+    padding: ($jumbotron-padding * 2) $jumbotron-padding
+
+.jumbotron-fluid
+  padding-right: 0
+  padding-left: 0
+
+  +border-radius(0)

static/assets/bootstrap/sass/_list-group.sass

@@ -0,0 +1,109 @@
+// Base class
+//
+// Easily usable on <ul>, <ol>, or <div>.
+
+.list-group
+  display: flex
+  flex-direction: column
+
+  // No need to set list-style: none; since .list-group-item is block level
+  padding-left: 0
+
+  // reset padding because ul and ol
+  margin-bottom: 0
+
+// Interactive list items
+//
+// Use anchor or button elements instead of `li`s or `div`s to create interactive
+// list items. Includes an extra `.active` modifier class for selected items.
+
+.list-group-item-action
+  width: 100%
+
+  // For `<button>`s (anchors become 100% by default though)
+  color: $list-group-action-color
+  text-align: inherit
+
+  // For `<button>`s (anchors inherit)
+
+  // Hover state
+  +hover-focus
+    color: $list-group-action-hover-color
+    text-decoration: none
+    background-color: $list-group-hover-bg
+
+
+  &:active
+    color: $list-group-action-active-color
+    background-color: $list-group-action-active-bg
+
+// Individual list items
+//
+// Use on `li`s or `div`s within the `.list-group` parent.
+
+.list-group-item
+  position: relative
+  display: block
+  padding: $list-group-item-padding-y $list-group-item-padding-x
+
+  // Place the border on the list items and negative margin up for better styling
+  margin-bottom: -$list-group-border-width
+  background-color: $list-group-bg
+  border: $list-group-border-width solid $list-group-border-color
+
+  &:first-child
+    +border-top-radius($list-group-border-radius)
+
+  &:last-child
+    margin-bottom: 0
+
+    +border-bottom-radius($list-group-border-radius)
+
+  +hover-focus
+    z-index: 1
+
+    // Place hover/active items above their siblings for proper border styling
+    text-decoration: none
+
+
+  &.disabled,
+  &:disabled
+    color: $list-group-disabled-color
+    background-color: $list-group-disabled-bg
+
+  // Include both here for `<a>`s and `<button>`s
+  &.active
+    z-index: 2
+
+    // Place active items above their siblings for proper border styling
+    color: $list-group-active-color
+    background-color: $list-group-active-bg
+    border-color: $list-group-active-border-color
+
+// Flush list items
+//
+// Remove borders and border-radius to keep list group items edge-to-edge. Most
+// useful within other components (e.g., cards).
+
+.list-group-flush
+  .list-group-item
+    border-right: 0
+    border-left: 0
+
+    +border-radius(0)
+
+  &:first-child
+    .list-group-item:first-child
+      border-top: 0
+
+  &:last-child
+    .list-group-item:last-child
+      border-bottom: 0
+
+// Contextual variants
+//
+// Add modifier classes to change text and background color on individual items.
+// Organizationally, this must come after the `:hover` states.
+
+@each $color, $value in $theme-colors
+  +list-group-item-variant($color, theme-color-level($color, -9), theme-color-level($color, 6))

static/assets/bootstrap/sass/_media.sass

@@ -0,0 +1,6 @@
+.media
+  display: flex
+  align-items: flex-start
+
+.media-body
+  flex: 1

static/assets/bootstrap/sass/_mixins.sass

@@ -0,0 +1,41 @@
+// Toggles
+//
+// Used in conjunction with global variables to enable certain theme features.
+
+// Utilities
+@import mixins/breakpoints
+@import mixins/hover
+@import mixins/image
+@import mixins/badge
+@import mixins/resize
+@import mixins/screen-reader
+@import mixins/size
+@import mixins/reset-text
+@import mixins/text-emphasis
+@import mixins/text-hide
+@import mixins/text-truncate
+@import mixins/visibility
+
+// // Components
+@import mixins/alert
+@import mixins/buttons
+@import mixins/caret
+@import mixins/pagination
+@import mixins/lists
+@import mixins/list-group
+@import mixins/nav-divider
+@import mixins/forms
+@import mixins/table-row
+
+// // Skins
+@import mixins/background-variant
+@import mixins/border-radius
+@import mixins/box-shadow
+@import mixins/gradients
+@import mixins/transition
+
+// // Layout
+@import mixins/clearfix
+@import mixins/grid-framework
+@import mixins/grid
+@import mixins/float

static/assets/bootstrap/sass/_modal.sass

@@ -0,0 +1,175 @@
+// .modal-open      - body class for killing the scroll
+// .modal           - container to scroll within
+// .modal-dialog    - positioning shell for the actual modal
+// .modal-content   - actual modal w/ bg and corners and stuff
+
+// Kill the scroll on the body
+.modal-open
+  overflow: hidden
+
+// Container that the modal scrolls within
+.modal
+  position: fixed
+  top: 0
+  right: 0
+  bottom: 0
+  left: 0
+  z-index: $zindex-modal
+  display: none
+  overflow: hidden
+
+  // Prevent Chrome on Windows from adding a focus outline. For details, see
+  // https://github.com/twbs/bootstrap/pull/10951.
+  outline: 0
+
+  // We deliberately don't use `-webkit-overflow-scrolling: touch;` due to a
+  // gnarly iOS Safari bug: https://bugs.webkit.org/show_bug.cgi?id=158342
+  // See also https://github.com/twbs/bootstrap/issues/17695
+
+  .modal-open &
+    overflow-x: hidden
+    overflow-y: auto
+
+// Shell div to position the modal with bottom padding
+.modal-dialog
+  position: relative
+  width: auto
+  margin: $modal-dialog-margin
+
+  // allow clicks to pass through for custom click handling to close modal
+  pointer-events: none
+
+  // When fading in the modal, animate it to slide down
+  .modal.fade &
+    +transition($modal-transition)
+
+    transform: translate(0, -25%)
+
+  .modal.show &
+    transform: translate(0, 0)
+
+.modal-dialog-centered
+  display: flex
+  align-items: center
+  min-height: calc(100% - (#{$modal-dialog-margin} * 2))
+
+// Actual modal
+.modal-content
+  position: relative
+  display: flex
+  flex-direction: column
+  width: 100%
+
+  // Ensure `.modal-content` extends the full width of the parent `.modal-dialog`
+  // counteract the pointer-events: none; in the .modal-dialog
+  pointer-events: auto
+  background-color: $modal-content-bg
+  background-clip: padding-box
+  border: $modal-content-border-width solid $modal-content-border-color
+
+  +border-radius($modal-content-border-radius)
+  +box-shadow($modal-content-box-shadow-xs)
+
+  // Remove focus outline from opened modal
+  outline: 0
+
+// Modal background
+.modal-backdrop
+  position: fixed
+  top: 0
+  right: 0
+  bottom: 0
+  left: 0
+  z-index: $zindex-modal-backdrop
+  background-color: $modal-backdrop-bg
+
+  // Fade for backdrop
+  &.fade
+    opacity: 0
+
+  &.show
+    opacity: $modal-backdrop-opacity
+
+// Modal header
+// Top section of the modal w/ title and dismiss
+.modal-header
+  display: flex
+  align-items: flex-start
+
+  // so the close btn always stays on the upper right corner
+  justify-content: space-between
+
+  // Put modal header elements (title and dismiss) on opposite ends
+  padding: $modal-header-padding
+  border-bottom: $modal-header-border-width solid $modal-header-border-color
+
+  +border-top-radius($modal-content-border-radius)
+
+  .close
+    padding: $modal-header-padding
+
+    // auto on the left force icon to the right even when there is no .modal-title
+    margin: (-$modal-header-padding) (-$modal-header-padding) (-$modal-header-padding) auto
+
+// Title text within header
+.modal-title
+  margin-bottom: 0
+  line-height: $modal-title-line-height
+
+// Modal body
+// Where all modal content resides (sibling of .modal-header and .modal-footer)
+.modal-body
+  position: relative
+
+  // Enable `flex-grow: 1` so that the body take up as much space as possible
+  // when should there be a fixed height on `.modal-dialog`.
+  flex: 1 1 auto
+  padding: $modal-inner-padding
+
+// Footer (for actions)
+.modal-footer
+  display: flex
+  align-items: center
+
+  // vertically center
+  justify-content: flex-end
+
+  // Right align buttons with flex property because text-align doesn't work on flex items
+  padding: $modal-inner-padding
+  border-top: $modal-footer-border-width solid $modal-footer-border-color
+
+  // Easily place margin between footer elements
+  > :not(:first-child)
+    margin-left: .25rem
+
+  > :not(:last-child)
+    margin-right: .25rem
+
+// Measure scrollbar width for padding body during modal show/hide
+.modal-scrollbar-measure
+  position: absolute
+  top: -9999px
+  width: 50px
+  height: 50px
+  overflow: scroll
+
+// Scale up the modal
++media-breakpoint-up(sm)
+  // Automatically set modal's width for larger viewports
+  .modal-dialog
+    max-width: $modal-md
+    margin: $modal-dialog-margin-y-sm-up auto
+
+  .modal-dialog-centered
+    min-height: calc(100% - (#{$modal-dialog-margin-y-sm-up} * 2))
+
+  .modal-content
+    +box-shadow($modal-content-box-shadow-sm-up)
+
+  .modal-sm
+    max-width: $modal-sm
+
+
++media-breakpoint-up(lg)
+  .modal-lg
+    max-width: $modal-lg

static/assets/bootstrap/sass/_nav.sass

@@ -0,0 +1,99 @@
+// Base class
+//
+// Kickstart any navigation component with a set of style resets. Works with
+// `<nav>`s or `<ul>`s.
+
+.nav
+  display: flex
+  flex-wrap: wrap
+  padding-left: 0
+  margin-bottom: 0
+  list-style: none
+
+.nav-link
+  display: block
+  padding: $nav-link-padding-y $nav-link-padding-x
+
+  +hover-focus
+    text-decoration: none
+
+
+  // Disabled state lightens text
+  &.disabled
+    color: $nav-link-disabled-color
+
+//
+// Tabs
+//
+
+.nav-tabs
+  border-bottom: $nav-tabs-border-width solid $nav-tabs-border-color
+
+  .nav-item
+    margin-bottom: -$nav-tabs-border-width
+
+  .nav-link
+    border: $nav-tabs-border-width solid transparent
+
+    +border-top-radius($nav-tabs-border-radius)
+
+    +hover-focus
+      border-color: $nav-tabs-link-hover-border-color
+
+
+    &.disabled
+      color: $nav-link-disabled-color
+      background-color: transparent
+      border-color: transparent
+
+  .nav-link.active,
+  .nav-item.show .nav-link
+    color: $nav-tabs-link-active-color
+    background-color: $nav-tabs-link-active-bg
+    border-color: $nav-tabs-link-active-border-color
+
+  .dropdown-menu
+    // Make dropdown border overlap tab border
+    margin-top: -$nav-tabs-border-width
+
+    // Remove the top rounded corners here since there is a hard edge above the menu
+    +border-top-radius(0)
+
+//
+// Pills
+//
+
+.nav-pills
+  .nav-link
+    +border-radius($nav-pills-border-radius)
+
+  .nav-link.active,
+  .show > .nav-link
+    color: $nav-pills-link-active-color
+    background-color: $nav-pills-link-active-bg
+
+//
+// Justified variants
+//
+
+.nav-fill
+  .nav-item
+    flex: 1 1 auto
+    text-align: center
+
+.nav-justified
+  .nav-item
+    flex-basis: 0
+    flex-grow: 1
+    text-align: center
+
+// Tabbable tabs
+//
+// Hide tabbable panes to start, show them when `.active`
+
+.tab-content
+  > .tab-pane
+    display: none
+
+  > .active
+    display: block

static/assets/bootstrap/sass/_navbar.sass

@@ -0,0 +1,261 @@
+// Contents
+//
+// Navbar
+// Navbar brand
+// Navbar nav
+// Navbar text
+// Navbar divider
+// Responsive navbar
+// Navbar position
+// Navbar themes
+
+// Navbar
+//
+// Provide a static navbar from which we expand to create full-width, fixed, and
+// other navbar variations.
+
+.navbar
+  position: relative
+  display: flex
+  flex-wrap: wrap
+
+  // allow us to do the line break for collapsing content
+  align-items: center
+  justify-content: space-between
+
+  // space out brand from logo
+  padding: $navbar-padding-y $navbar-padding-x
+
+  // Because flex properties aren't inherited, we need to redeclare these first
+  // few properties so that content nested within behave properly.
+  > .container,
+  > .container-fluid
+    display: flex
+    flex-wrap: wrap
+    align-items: center
+    justify-content: space-between
+
+// Navbar brand
+//
+// Used for brand, project, or site names.
+
+.navbar-brand
+  display: inline-block
+  padding-top: $navbar-brand-padding-y
+  padding-bottom: $navbar-brand-padding-y
+  margin-right: $navbar-padding-x
+  font-size: $navbar-brand-font-size
+  line-height: inherit
+  white-space: nowrap
+
+  +hover-focus
+    text-decoration: none
+
+// Navbar nav
+//
+// Custom navbar navigation (doesn't require `.nav`, but does make use of `.nav-link`).
+
+.navbar-nav
+  display: flex
+  flex-direction: column
+
+  // cannot use `inherit` to get the `.navbar`s value
+  padding-left: 0
+  margin-bottom: 0
+  list-style: none
+
+  .nav-link
+    padding-right: 0
+    padding-left: 0
+
+  .dropdown-menu
+    position: static
+    float: none
+
+// Navbar text
+//
+//
+
+.navbar-text
+  display: inline-block
+  padding-top: $nav-link-padding-y
+  padding-bottom: $nav-link-padding-y
+
+// Responsive navbar
+//
+// Custom styles for responsive collapsing and toggling of navbar contents.
+// Powered by the collapse Bootstrap JavaScript plugin.
+
+// When collapsed, prevent the toggleable navbar contents from appearing in
+// the default flexbox row orientation. Requires the use of `flex-wrap: wrap`
+// on the `.navbar` parent.
+.navbar-collapse
+  flex-basis: 100%
+  flex-grow: 1
+
+  // For always expanded or extra full navbars, ensure content aligns itself
+  // properly vertically. Can be easily overridden with flex utilities.
+  align-items: center
+
+// Button for toggling the navbar when in its collapsed state
+.navbar-toggler
+  padding: $navbar-toggler-padding-y $navbar-toggler-padding-x
+  font-size: $navbar-toggler-font-size
+  line-height: 1
+  background-color: transparent
+
+  // remove default button style
+  border: $border-width solid transparent
+
+  // remove default button style
+  +border-radius($navbar-toggler-border-radius)
+
+  +hover-focus
+    text-decoration: none
+
+
+  // Opinionated: add "hand" cursor to non-disabled .navbar-toggler elements
+  &:not(:disabled):not(.disabled)
+    cursor: pointer
+
+// Keep as a separate element so folks can easily override it with another icon
+// or image file as needed.
+.navbar-toggler-icon
+  display: inline-block
+  width: 1.5em
+  height: 1.5em
+  vertical-align: middle
+  content: ""
+  background: no-repeat center center
+  background-size: 100% 100%
+
+// Generate series of `.navbar-expand-*` responsive classes for configuring
+// where your navbar collapses.
+.navbar-expand
+  @each $breakpoint in map-keys($grid-breakpoints)
+    $next: breakpoint-next($breakpoint, $grid-breakpoints)
+    $infix: breakpoint-infix($next, $grid-breakpoints)
+
+    &#{$infix}
+      +media-breakpoint-down($breakpoint)
+        > .container,
+        > .container-fluid
+          padding-right: 0
+          padding-left: 0
+
+
+      +media-breakpoint-up($next)
+        flex-flow: row nowrap
+        justify-content: flex-start
+
+        .navbar-nav
+          flex-direction: row
+
+          .dropdown-menu
+            position: absolute
+
+          .nav-link
+            padding-right: $navbar-nav-link-padding-x
+            padding-left: $navbar-nav-link-padding-x
+
+        // For nesting containers, have to redeclare for alignment purposes
+        > .container,
+        > .container-fluid
+          flex-wrap: nowrap
+
+        .navbar-collapse
+          display: flex !important
+
+          // stylelint-disable-line declaration-no-important
+
+          // Changes flex-bases to auto because of an IE10 bug
+          flex-basis: auto
+
+        .navbar-toggler
+          display: none
+
+// Navbar themes
+//
+// Styles for switching between navbars with light or dark background.
+
+// Dark links against a light background
+.navbar-light
+  .navbar-brand
+    color: $navbar-light-active-color
+
+    +hover-focus
+      color: $navbar-light-active-color
+
+  .navbar-nav
+    .nav-link
+      color: $navbar-light-color
+
+      +hover-focus
+        color: $navbar-light-hover-color
+
+
+      &.disabled
+        color: $navbar-light-disabled-color
+
+    .show > .nav-link,
+    .active > .nav-link,
+    .nav-link.show,
+    .nav-link.active
+      color: $navbar-light-active-color
+
+  .navbar-toggler
+    color: $navbar-light-color
+    border-color: $navbar-light-toggler-border-color
+
+  .navbar-toggler-icon
+    background-image: $navbar-light-toggler-icon-bg
+
+  .navbar-text
+    color: $navbar-light-color
+
+    a
+      color: $navbar-light-active-color
+
+      +hover-focus
+        color: $navbar-light-active-color
+
+// White links against a dark background
+.navbar-dark
+  .navbar-brand
+    color: $navbar-dark-active-color
+
+    +hover-focus
+      color: $navbar-dark-active-color
+
+  .navbar-nav
+    .nav-link
+      color: $navbar-dark-color
+
+      +hover-focus
+        color: $navbar-dark-hover-color
+
+
+      &.disabled
+        color: $navbar-dark-disabled-color
+
+    .show > .nav-link,
+    .active > .nav-link,
+    .nav-link.show,
+    .nav-link.active
+      color: $navbar-dark-active-color
+
+  .navbar-toggler
+    color: $navbar-dark-color
+    border-color: $navbar-dark-toggler-border-color
+
+  .navbar-toggler-icon
+    background-image: $navbar-dark-toggler-icon-bg
+
+  .navbar-text
+    color: $navbar-dark-color
+
+    a
+      color: $navbar-dark-active-color
+
+      +hover-focus
+        color: $navbar-dark-active-color

static/assets/bootstrap/sass/_pagination.sass

@@ -0,0 +1,67 @@
+.pagination
+  display: flex
+
+  +list-unstyled
+  +border-radius
+
+.page-link
+  position: relative
+  display: block
+  padding: $pagination-padding-y $pagination-padding-x
+  margin-left: -$pagination-border-width
+  line-height: $pagination-line-height
+  color: $pagination-color
+  background-color: $pagination-bg
+  border: $pagination-border-width solid $pagination-border-color
+
+  &:hover
+    z-index: 2
+    color: $pagination-hover-color
+    text-decoration: none
+    background-color: $pagination-hover-bg
+    border-color: $pagination-hover-border-color
+
+  &:focus
+    z-index: 2
+    outline: $pagination-focus-outline
+    box-shadow: $pagination-focus-box-shadow
+
+  // Opinionated: add "hand" cursor to non-disabled .page-link elements
+  &:not(:disabled):not(.disabled)
+    cursor: pointer
+
+.page-item
+  &:first-child
+    .page-link
+      margin-left: 0
+
+      +border-left-radius($border-radius)
+
+  &:last-child
+    .page-link
+      +border-right-radius($border-radius)
+
+  &.active .page-link
+    z-index: 1
+    color: $pagination-active-color
+    background-color: $pagination-active-bg
+    border-color: $pagination-active-border-color
+
+  &.disabled .page-link
+    color: $pagination-disabled-color
+    pointer-events: none
+
+    // Opinionated: remove the "hand" cursor set previously for .page-link
+    cursor: auto
+    background-color: $pagination-disabled-bg
+    border-color: $pagination-disabled-border-color
+
+//
+// Sizing
+//
+
+.pagination-lg
+  +pagination-size($pagination-padding-y-lg, $pagination-padding-x-lg, $font-size-lg, $line-height-lg, $border-radius-lg)
+
+.pagination-sm
+  +pagination-size($pagination-padding-y-sm, $pagination-padding-x-sm, $font-size-sm, $line-height-sm, $border-radius-sm)

static/assets/bootstrap/sass/_popover.sass

@@ -0,0 +1,165 @@
+.popover
+  position: absolute
+  top: 0
+  left: 0
+  z-index: $zindex-popover
+  display: block
+  max-width: $popover-max-width
+
+  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  +reset-text
+
+  font-size: $popover-font-size
+
+  // Allow breaking very long words so they don't overflow the popover's bounds
+  word-wrap: break-word
+  background-color: $popover-bg
+  background-clip: padding-box
+  border: $popover-border-width solid $popover-border-color
+
+  +border-radius($popover-border-radius)
+  +box-shadow($popover-box-shadow)
+
+  .arrow
+    position: absolute
+    display: block
+    width: $popover-arrow-width
+    height: $popover-arrow-height
+    margin: 0 $border-radius-lg
+
+    &::before,
+    &::after
+      position: absolute
+      display: block
+      content: ""
+      border-color: transparent
+      border-style: solid
+
+.bs-popover-top
+  margin-bottom: $popover-arrow-height
+
+  .arrow
+    bottom: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1)
+
+  .arrow::before,
+  .arrow::after
+    border-width: $popover-arrow-height ($popover-arrow-width / 2) 0
+
+  .arrow::before
+    bottom: 0
+    border-top-color: $popover-arrow-outer-color
+
+  .arrow::after
+    bottom: $popover-border-width
+    border-top-color: $popover-arrow-color
+
+.bs-popover-right
+  margin-left: $popover-arrow-height
+
+  .arrow
+    left: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1)
+    width: $popover-arrow-height
+    height: $popover-arrow-width
+    margin: $border-radius-lg 0
+
+    // make sure the arrow does not touch the popover's rounded corners
+
+  .arrow::before,
+  .arrow::after
+    border-width: ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2) 0
+
+  .arrow::before
+    left: 0
+    border-right-color: $popover-arrow-outer-color
+
+  .arrow::after
+    left: $popover-border-width
+    border-right-color: $popover-arrow-color
+
+.bs-popover-bottom
+  margin-top: $popover-arrow-height
+
+  .arrow
+    top: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1)
+
+  .arrow::before,
+  .arrow::after
+    border-width: 0 ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2)
+
+  .arrow::before
+    top: 0
+    border-bottom-color: $popover-arrow-outer-color
+
+  .arrow::after
+    top: $popover-border-width
+    border-bottom-color: $popover-arrow-color
+
+  // This will remove the popover-header's border just below the arrow
+  .popover-header::before
+    position: absolute
+    top: 0
+    left: 50%
+    display: block
+    width: $popover-arrow-width
+    margin-left: $popover-arrow-width / -2
+    content: ""
+    border-bottom: $popover-border-width solid $popover-header-bg
+
+.bs-popover-left
+  margin-right: $popover-arrow-height
+
+  .arrow
+    right: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1)
+    width: $popover-arrow-height
+    height: $popover-arrow-width
+    margin: $border-radius-lg 0
+
+    // make sure the arrow does not touch the popover's rounded corners
+
+  .arrow::before,
+  .arrow::after
+    border-width: ($popover-arrow-width / 2) 0 ($popover-arrow-width / 2) $popover-arrow-height
+
+  .arrow::before
+    right: 0
+    border-left-color: $popover-arrow-outer-color
+
+  .arrow::after
+    right: $popover-border-width
+    border-left-color: $popover-arrow-color
+
+.bs-popover-auto
+  &[x-placement^="top"]
+    @extend .bs-popover-top
+
+  &[x-placement^="right"]
+    @extend .bs-popover-right
+
+  &[x-placement^="bottom"]
+    @extend .bs-popover-bottom
+
+  &[x-placement^="left"]
+    @extend .bs-popover-left
+
+// Offset the popover to account for the popover arrow
+.popover-header
+  padding: $popover-header-padding-y $popover-header-padding-x
+  margin-bottom: 0
+
+  // Reset the default from Reboot
+  font-size: $font-size-base
+  color: $popover-header-color
+  background-color: $popover-header-bg
+  border-bottom: $popover-border-width solid darken($popover-header-bg, 5%)
+
+  $offset-border-width: calc(#{$border-radius-lg} - #{$popover-border-width})
+
+  +border-top-radius($offset-border-width)
+
+  &:empty
+    display: none
+
+.popover-body
+  padding: $popover-body-padding-y $popover-body-padding-x
+  color: $popover-body-color

static/assets/bootstrap/sass/_print.sass

@@ -0,0 +1,124 @@
+// stylelint-disable declaration-no-important, selector-no-qualifying-type
+
+// Source: https://github.com/h5bp/html5-boilerplate/blob/master/src/css/main.css
+
+// ==========================================================================
+// Print styles.
+// Inlined to avoid the additional HTTP request:
+// https://www.phpied.com/delay-loading-your-print-css/
+// ==========================================================================
+
+@if $enable-print-styles
+  @media print
+    *,
+    *::before,
+    *::after
+      // Bootstrap specific; comment out `color` and `background`
+      //color: $black !important; // Black prints faster
+      text-shadow: none !important
+
+      //background: transparent !important;
+      box-shadow: none !important
+
+    a
+      &:not(.btn)
+        text-decoration: underline
+
+    // Bootstrap specific; comment the following selector out
+    //a[href]::after {
+    //  content: " (" attr(href) ")";
+    //}
+
+    abbr[title]::after
+      content: " (" attr(title) ")"
+
+    // Bootstrap specific; comment the following selector out
+    //
+    // Don't show links that are fragment identifiers,
+    // or use the `javascript:` pseudo protocol
+    //
+
+    //a[href^="#"]::after,
+    //a[href^="javascript:"]::after {
+    // content: "";
+    //}
+
+    pre
+      white-space: pre-wrap !important
+
+    pre,
+    blockquote
+      border: $border-width solid $gray-500
+
+      // Bootstrap custom code; using `$border-width` instead of 1px
+      page-break-inside: avoid
+
+    //
+    // Printing Tables:
+    // http://css-discuss.incutio.com/wiki/Printing_Tables
+    //
+
+    thead
+      display: table-header-group
+
+    tr,
+    img
+      page-break-inside: avoid
+
+    p,
+    h2,
+    h3
+      orphans: 3
+      widows: 3
+
+    h2,
+    h3
+      page-break-after: avoid
+
+    // Bootstrap specific changes start
+
+    // Specify a size and min-width to make printing closer across browsers.
+    // We don't set margin here because it breaks `size` in Chrome. We also
+    // don't use `!important` on `size` as it breaks in Chrome.
+    @page
+      size: $print-page-size
+
+    body
+      min-width: $print-body-min-width !important
+
+    .container
+      min-width: $print-body-min-width !important
+
+    // Bootstrap components
+    .navbar
+      display: none
+
+    .badge
+      border: $border-width solid $black
+
+    .table
+      border-collapse: collapse !important
+
+      td,
+      th
+        background-color: $white !important
+
+    .table-bordered
+      th,
+      td
+        border: 1px solid $gray-300 !important
+
+    .table-dark
+      color: inherit
+
+      th,
+      td,
+      thead th,
+      tbody + tbody
+        border-color: $table-border-color
+
+    .table .thead-dark th
+      color: inherit
+      border-color: $table-border-color
+
+    // Bootstrap specific changes end

static/assets/bootstrap/sass/_progress.sass

@@ -0,0 +1,37 @@
+@keyframes progress-bar-stripes
+  from
+    background-position: $progress-height 0
+
+  to
+    background-position: 0 0
+
+.progress
+  display: flex
+  height: $progress-height
+  overflow: hidden
+
+  // force rounded corners by cropping it
+  font-size: $progress-font-size
+  background-color: $progress-bg
+
+  +border-radius($progress-border-radius)
+  +box-shadow($progress-box-shadow)
+
+.progress-bar
+  display: flex
+  flex-direction: column
+  justify-content: center
+  color: $progress-bar-color
+  text-align: center
+  white-space: nowrap
+  background-color: $progress-bar-bg
+
+  +transition($progress-bar-transition)
+
+.progress-bar-striped
+  +gradient-striped
+
+  background-size: $progress-height $progress-height
+
+.progress-bar-animated
+  animation: progress-bar-stripes $progress-bar-animation-timing

static/assets/bootstrap/sass/_reboot.sass

@@ -0,0 +1,513 @@
+// stylelint-disable at-rule-no-vendor-prefix, declaration-no-important, selector-no-qualifying-type, property-no-vendor-prefix
+
+// Reboot
+//
+// Normalization of HTML elements, manually forked from Normalize.css to remove
+// styles targeting irrelevant browsers while applying new styles.
+//
+// Normalize is licensed MIT. https://github.com/necolas/normalize.css
+
+// Document
+//
+// 1. Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.
+// 2. Change the default font family in all browsers.
+// 3. Correct the line height in all browsers.
+// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.
+// 5. Setting @viewport causes scrollbars to overlap content in IE11 and Edge, so
+//    we force a non-overlapping, non-auto-hiding scrollbar to counteract.
+// 6. Change the default tap highlight to be completely transparent in iOS.
+
+*,
+*::before,
+*::after
+  box-sizing: border-box
+
+  // 1
+
+html
+  font-family: sans-serif
+
+  // 2
+  line-height: 1.15
+
+  // 3
+  -webkit-text-size-adjust: 100%
+
+  // 4
+  -ms-text-size-adjust: 100%
+
+  // 4
+  -ms-overflow-style: scrollbar
+
+  // 5
+  -webkit-tap-highlight-color: rgba($black, 0)
+
+  // 6
+
+// IE10+ doesn't honor `<meta name="viewport">` in some cases.
+@at-root
+  @-ms-viewport
+    width: device-width
+
+// stylelint-disable selector-list-comma-newline-after
+// Shim for "new" HTML5 structural elements to display correctly (IE10, older browsers)
+article, aside, figcaption, figure, footer, header, hgroup, main, nav, section
+  display: block
+
+// stylelint-enable selector-list-comma-newline-after
+
+// Body
+//
+// 1. Remove the margin in all browsers.
+// 2. As a best practice, apply a default `background-color`.
+// 3. Set an explicit initial text-align value so that we can later use the
+//    the `inherit` value on things like `<th>` elements.
+
+body
+  margin: 0
+
+  // 1
+  font-family: $font-family-base
+  font-size: $font-size-base
+  font-weight: $font-weight-base
+  line-height: $line-height-base
+  color: $body-color
+  text-align: left
+
+  // 3
+  background-color: $body-bg
+
+  // 2
+
+// Suppress the focus outline on elements that cannot be accessed via keyboard.
+// This prevents an unwanted focus outline from appearing around elements that
+// might still respond to pointer events.
+//
+// Credit: https://github.com/suitcss/base
+[tabindex="-1"]:focus
+  outline: 0 !important
+
+// Content grouping
+//
+// 1. Add the correct box sizing in Firefox.
+// 2. Show the overflow in Edge and IE.
+
+hr
+  box-sizing: content-box
+
+  // 1
+  height: 0
+
+  // 1
+  overflow: visible
+
+  // 2
+
+//
+// Typography
+//
+
+// Remove top margins from headings
+//
+// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
+// margin for easier control within type scales as it avoids margin collapsing.
+// stylelint-disable selector-list-comma-newline-after
+h1, h2, h3, h4, h5, h6
+  margin-top: 0
+  margin-bottom: $headings-margin-bottom
+
+// stylelint-enable selector-list-comma-newline-after
+
+// Reset margins on paragraphs
+//
+// Similarly, the top margin on `<p>`s get reset. However, we also reset the
+// bottom margin to use `rem` units instead of `em`.
+p
+  margin-top: 0
+  margin-bottom: $paragraph-margin-bottom
+
+// Abbreviations
+//
+// 1. Remove the bottom border in Firefox 39-.
+// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+// 3. Add explicit cursor to indicate changed behavior.
+// 4. Duplicate behavior to the data-* attribute for our tooltip plugin
+
+abbr[title],
+abbr[data-original-title]
+  // 4
+  text-decoration: underline
+
+  // 2
+  text-decoration: underline dotted
+
+  // 2
+  cursor: help
+
+  // 3
+  border-bottom: 0
+
+  // 1
+
+address
+  margin-bottom: 1rem
+  font-style: normal
+  line-height: inherit
+
+ol,
+ul,
+dl
+  margin-top: 0
+  margin-bottom: 1rem
+
+ol ol,
+ul ul,
+ol ul,
+ul ol
+  margin-bottom: 0
+
+dt
+  font-weight: $dt-font-weight
+
+dd
+  margin-bottom: .5rem
+  margin-left: 0
+
+  // Undo browser default
+
+blockquote
+  margin: 0 0 1rem
+
+dfn
+  font-style: italic
+
+  // Add the correct font style in Android 4.3-
+
+// stylelint-disable font-weight-notation
+b,
+strong
+  font-weight: bolder
+
+  // Add the correct font weight in Chrome, Edge, and Safari
+
+// stylelint-enable font-weight-notation
+
+small
+  font-size: 80%
+
+  // Add the correct font size in all browsers
+
+//
+// Prevent `sub` and `sup` elements from affecting the line height in
+// all browsers.
+//
+
+sub,
+sup
+  position: relative
+  font-size: 75%
+  line-height: 0
+  vertical-align: baseline
+
+sub
+  bottom: -.25em
+
+sup
+  top: -.5em
+
+//
+// Links
+//
+
+a
+  color: $link-color
+  text-decoration: $link-decoration
+  background-color: transparent
+
+  // Remove the gray background on active links in IE 10.
+  -webkit-text-decoration-skip: objects
+
+  // Remove gaps in links underline in iOS 8+ and Safari 8+.
+
+  +hover
+    color: $link-hover-color
+    text-decoration: $link-hover-decoration
+
+// And undo these styles for placeholder links/named anchors (without href)
+// which have not been made explicitly keyboard-focusable (without tabindex).
+// It would be more straightforward to just use a[href] in previous block, but that
+// causes specificity issues in many other styles that are too complex to fix.
+// See https://github.com/twbs/bootstrap/issues/19402
+
+a:not([href]):not([tabindex])
+  color: inherit
+  text-decoration: none
+
+  +hover-focus
+    color: inherit
+    text-decoration: none
+
+
+  &:focus
+    outline: 0
+
+//
+// Code
+//
+
+pre,
+code,
+kbd,
+samp
+  font-family: $font-family-monospace
+  font-size: 1em
+
+  // Correct the odd `em` font sizing in all browsers.
+
+pre
+  // Remove browser default top margin
+  margin-top: 0
+
+  // Reset browser default of `1em` to use `rem`s
+  margin-bottom: 1rem
+
+  // Don't allow content to break outside
+  overflow: auto
+
+  // We have @viewport set which causes scrollbars to overlap content in IE11 and Edge, so
+  // we force a non-overlapping, non-auto-hiding scrollbar to counteract.
+  -ms-overflow-style: scrollbar
+
+//
+// Figures
+//
+
+figure
+  // Apply a consistent margin strategy (matches our type styles).
+  margin: 0 0 1rem
+
+//
+// Images and content
+//
+
+img
+  vertical-align: middle
+  border-style: none
+
+  // Remove the border on images inside links in IE 10-.
+
+svg:not(:root)
+  overflow: hidden
+
+  // Hide the overflow in IE
+  vertical-align: middle
+
+//
+// Tables
+//
+
+table
+  border-collapse: collapse
+
+  // Prevent double borders
+
+caption
+  padding-top: $table-cell-padding
+  padding-bottom: $table-cell-padding
+  color: $table-caption-color
+  text-align: left
+  caption-side: bottom
+
+th
+  // Matches default `<td>` alignment by inheriting from the `<body>`, or the
+  // closest parent with a set `text-align`.
+  text-align: inherit
+
+//
+// Forms
+//
+
+label
+  // Allow labels to use `margin` for spacing.
+  display: inline-block
+  margin-bottom: $label-margin-bottom
+
+// Remove the default `border-radius` that macOS Chrome adds.
+//
+// Details at https://github.com/twbs/bootstrap/issues/24093
+button
+  border-radius: 0
+
+// Work around a Firefox/IE bug where the transparent `button` background
+// results in a loss of the default `button` focus styles.
+//
+// Credit: https://github.com/suitcss/base/
+button:focus
+  outline: 1px dotted
+  outline: 5px auto -webkit-focus-ring-color
+
+input,
+button,
+select,
+optgroup,
+textarea
+  margin: 0
+
+  // Remove the margin in Firefox and Safari
+  font-family: inherit
+  font-size: inherit
+  line-height: inherit
+
+button,
+input
+  overflow: visible
+
+  // Show the overflow in Edge
+
+button,
+select
+  text-transform: none
+
+  // Remove the inheritance of text transform in Firefox
+
+// 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+//    controls in Android 4.
+// 2. Correct the inability to style clickable types in iOS and Safari.
+button,
+html [type="button"],
+[type="reset"],
+[type="submit"]
+  -webkit-appearance: button
+
+  // 2
+
+// Remove inner border and padding from Firefox, but don't restore the outline like Normalize.
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner
+  padding: 0
+  border-style: none
+
+input[type="radio"],
+input[type="checkbox"]
+  box-sizing: border-box
+
+  // 1. Add the correct box sizing in IE 10-
+  padding: 0
+
+  // 2. Remove the padding in IE 10-
+
+input[type="date"],
+input[type="time"],
+input[type="datetime-local"],
+input[type="month"]
+  // Remove the default appearance of temporal inputs to avoid a Mobile Safari
+  // bug where setting a custom line-height prevents text from being vertically
+  // centered within the input.
+  // See https://bugs.webkit.org/show_bug.cgi?id=139848
+  // and https://github.com/twbs/bootstrap/issues/11266
+  -webkit-appearance: listbox
+
+textarea
+  overflow: auto
+
+  // Remove the default vertical scrollbar in IE.
+  // Textareas should really only resize vertically so they don't break their (horizontal) containers.
+  resize: vertical
+
+fieldset
+  // Browsers set a default `min-width: min-content;` on fieldsets,
+  // unlike e.g. `<div>`s, which have `min-width: 0;` by default.
+  // So we reset that to ensure fieldsets behave more like a standard block element.
+  // See https://github.com/twbs/bootstrap/issues/12359
+  // and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements
+  min-width: 0
+
+  // Reset the default outline behavior of fieldsets so they don't affect page layout.
+  padding: 0
+  margin: 0
+  border: 0
+
+// 1. Correct the text wrapping in Edge and IE.
+// 2. Correct the color inheritance from `fieldset` elements in IE.
+legend
+  display: block
+  width: 100%
+  max-width: 100%
+
+  // 1
+  padding: 0
+  margin-bottom: .5rem
+  font-size: 1.5rem
+  line-height: inherit
+  color: inherit
+
+  // 2
+  white-space: normal
+
+  // 1
+
+progress
+  vertical-align: baseline
+
+  // Add the correct vertical alignment in Chrome, Firefox, and Opera.
+
+// Correct the cursor style of increment and decrement buttons in Chrome.
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button
+  height: auto
+
+[type="search"]
+  // This overrides the extra rounded corners on search inputs in iOS so that our
+  // `.form-control` class can properly style them. Note that this cannot simply
+  // be added to `.form-control` as it's not specific enough. For details, see
+  // https://github.com/twbs/bootstrap/issues/11586.
+  outline-offset: -2px
+
+  // 2. Correct the outline style in Safari.
+  -webkit-appearance: none
+
+//
+// Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
+//
+
+[type="search"]::-webkit-search-cancel-button,
+[type="search"]::-webkit-search-decoration
+  -webkit-appearance: none
+
+//
+// 1. Correct the inability to style clickable types in iOS and Safari.
+// 2. Change font properties to `inherit` in Safari.
+//
+
+\::-webkit-file-upload-button
+  font: inherit
+
+  // 2
+  -webkit-appearance: button
+
+  // 1
+
+//
+// Correct element displays
+//
+
+output
+  display: inline-block
+
+summary
+  display: list-item
+
+  // Add the correct display in all browsers
+  cursor: pointer
+
+template
+  display: none
+
+  // Add the correct display in IE
+
+// Always hide an element with the `hidden` HTML attribute (from PureCSS).
+// Needed for proper display in IE 10-.
+[hidden]
+  display: none !important

static/assets/bootstrap/sass/_root.sass

@@ -0,0 +1,15 @@
+\:root
+  // Custom variable values only support SassScript inside `#{}`.
+  @each $color, $value in $colors
+    --#{$color}: #{$value}
+
+  @each $color, $value in $theme-colors
+    --#{$color}: #{$value}
+
+  @each $bp, $value in $grid-breakpoints
+    --breakpoint-#{$bp}: #{$value}
+
+  // Use `inspect` for lists so that quoted items keep the quotes.
+  // See https://github.com/sass/sass/issues/2383#issuecomment-336349172
+  --font-family-sans-serif: #{inspect($font-family-sans-serif)}
+  --font-family-monospace: #{inspect($font-family-monospace)}

static/assets/bootstrap/sass/_tables.sass

@@ -0,0 +1,149 @@
+//
+// Basic Bootstrap table
+//
+
+.table
+  width: 100%
+  max-width: 100%
+  margin-bottom: $spacer
+  background-color: $table-bg
+
+  // Reset for nesting within parents with `background-color`.
+
+  th,
+  td
+    padding: $table-cell-padding
+    vertical-align: top
+    border-top: $table-border-width solid $table-border-color
+
+  thead th
+    vertical-align: bottom
+    border-bottom: (2 * $table-border-width) solid $table-border-color
+
+  tbody + tbody
+    border-top: (2 * $table-border-width) solid $table-border-color
+
+  .table
+    background-color: $body-bg
+
+//
+// Condensed table w/ half padding
+//
+
+.table-sm
+  th,
+  td
+    padding: $table-cell-padding-sm
+
+// Border versions
+//
+// Add or remove borders all around the table and between all the columns.
+
+.table-bordered
+  border: $table-border-width solid $table-border-color
+
+  th,
+  td
+    border: $table-border-width solid $table-border-color
+
+  thead
+    th,
+    td
+      border-bottom-width: 2 * $table-border-width
+
+.table-borderless
+  th,
+  td,
+  thead th,
+  tbody + tbody
+    border: 0
+
+// Zebra-striping
+//
+// Default zebra-stripe styles (alternating gray and transparent backgrounds)
+
+.table-striped
+  tbody tr:nth-of-type(#{$table-striped-order})
+    background-color: $table-accent-bg
+
+// Hover effect
+//
+// Placed here since it has to come after the potential zebra striping
+
+.table-hover
+  tbody tr
+    +hover
+      background-color: $table-hover-bg
+
+// Table backgrounds
+//
+// Exact selectors below required to override `.table-striped` and prevent
+// inheritance to nested tables.
+
+@each $color, $value in $theme-colors
+  +table-row-variant($color, theme-color-level($color, -9))
+
++table-row-variant(active, $table-active-bg)
+
+// Dark styles
+//
+// Same table markup, but inverted color scheme: dark background and light text.
+
+// stylelint-disable-next-line no-duplicate-selectors
+.table
+  .thead-dark
+    th
+      color: $table-dark-color
+      background-color: $table-dark-bg
+      border-color: $table-dark-border-color
+
+  .thead-light
+    th
+      color: $table-head-color
+      background-color: $table-head-bg
+      border-color: $table-border-color
+
+.table-dark
+  color: $table-dark-color
+  background-color: $table-dark-bg
+
+  th,
+  td,
+  thead th
+    border-color: $table-dark-border-color
+
+  &.table-bordered
+    border: 0
+
+  &.table-striped
+    tbody tr:nth-of-type(odd)
+      background-color: $table-dark-accent-bg
+
+  &.table-hover
+    tbody tr
+      +hover
+        background-color: $table-dark-hover-bg
+
+// Responsive tables
+//
+// Generate series of `.table-responsive-*` classes for configuring the screen
+// size of where your table will overflow.
+
+.table-responsive
+  @each $breakpoint in map-keys($grid-breakpoints)
+    $next: breakpoint-next($breakpoint, $grid-breakpoints)
+    $infix: breakpoint-infix($next, $grid-breakpoints)
+
+    &#{$infix}
+      +media-breakpoint-down($breakpoint)
+        display: block
+        width: 100%
+        overflow-x: auto
+        -webkit-overflow-scrolling: touch
+        -ms-overflow-style: -ms-autohiding-scrollbar
+
+        // See https://github.com/twbs/bootstrap/pull/10057
+
+        // Prevent double border on horizontal scroll due to use of `display: block;`
+        > .table-bordered
+          border: 0

static/assets/bootstrap/sass/_tooltip.sass

@@ -0,0 +1,102 @@
+// Base class
+.tooltip
+  position: absolute
+  z-index: $zindex-tooltip
+  display: block
+  margin: $tooltip-margin
+
+  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  +reset-text
+
+  font-size: $tooltip-font-size
+
+  // Allow breaking very long words so they don't overflow the tooltip's bounds
+  word-wrap: break-word
+  opacity: 0
+
+  &.show
+    opacity: $tooltip-opacity
+
+  .arrow
+    position: absolute
+    display: block
+    width: $tooltip-arrow-width
+    height: $tooltip-arrow-height
+
+    &::before
+      position: absolute
+      content: ""
+      border-color: transparent
+      border-style: solid
+
+.bs-tooltip-top
+  padding: $tooltip-arrow-height 0
+
+  .arrow
+    bottom: 0
+
+    &::before
+      top: 0
+      border-width: $tooltip-arrow-height ($tooltip-arrow-width / 2) 0
+      border-top-color: $tooltip-arrow-color
+
+.bs-tooltip-right
+  padding: 0 $tooltip-arrow-height
+
+  .arrow
+    left: 0
+    width: $tooltip-arrow-height
+    height: $tooltip-arrow-width
+
+    &::before
+      right: 0
+      border-width: ($tooltip-arrow-width / 2) $tooltip-arrow-height ($tooltip-arrow-width / 2) 0
+      border-right-color: $tooltip-arrow-color
+
+.bs-tooltip-bottom
+  padding: $tooltip-arrow-height 0
+
+  .arrow
+    top: 0
+
+    &::before
+      bottom: 0
+      border-width: 0 ($tooltip-arrow-width / 2) $tooltip-arrow-height
+      border-bottom-color: $tooltip-arrow-color
+
+.bs-tooltip-left
+  padding: 0 $tooltip-arrow-height
+
+  .arrow
+    right: 0
+    width: $tooltip-arrow-height
+    height: $tooltip-arrow-width
+
+    &::before
+      left: 0
+      border-width: ($tooltip-arrow-width / 2) 0 ($tooltip-arrow-width / 2) $tooltip-arrow-height
+      border-left-color: $tooltip-arrow-color
+
+.bs-tooltip-auto
+  &[x-placement^="top"]
+    @extend .bs-tooltip-top
+
+  &[x-placement^="right"]
+    @extend .bs-tooltip-right
+
+  &[x-placement^="bottom"]
+    @extend .bs-tooltip-bottom
+
+  &[x-placement^="left"]
+    @extend .bs-tooltip-left
+
+// Wrapper for the tooltip content
+.tooltip-inner
+  max-width: $tooltip-max-width
+  padding: $tooltip-padding-y $tooltip-padding-x
+  color: $tooltip-color
+  text-align: center
+  background-color: $tooltip-bg
+
+  +border-radius($tooltip-border-radius)

static/assets/bootstrap/sass/_transitions.sass

@@ -0,0 +1,18 @@
+// stylelint-disable selector-no-qualifying-type
+
+.fade
+  +transition($transition-fade)
+
+  &:not(.show)
+    opacity: 0
+
+.collapse
+  &:not(.show)
+    display: none
+
+.collapsing
+  position: relative
+  height: 0
+  overflow: hidden
+
+  +transition($transition-collapse)

static/assets/bootstrap/sass/_type.sass

@@ -0,0 +1,123 @@
+// stylelint-disable declaration-no-important, selector-list-comma-newline-after
+
+//
+// Headings
+//
+
+h1, h2, h3, h4, h5, h6,
+.h1, .h2, .h3, .h4, .h5, .h6
+  margin-bottom: $headings-margin-bottom
+  font-family: $headings-font-family
+  font-weight: $headings-font-weight
+  line-height: $headings-line-height
+  color: $headings-color
+
+h1, .h1
+  font-size: $h1-font-size
+
+h2, .h2
+  font-size: $h2-font-size
+
+h3, .h3
+  font-size: $h3-font-size
+
+h4, .h4
+  font-size: $h4-font-size
+
+h5, .h5
+  font-size: $h5-font-size
+
+h6, .h6
+  font-size: $h6-font-size
+
+.lead
+  font-size: $lead-font-size
+  font-weight: $lead-font-weight
+
+// Type display classes
+.display-1
+  font-size: $display1-size
+  font-weight: $display1-weight
+  line-height: $display-line-height
+
+.display-2
+  font-size: $display2-size
+  font-weight: $display2-weight
+  line-height: $display-line-height
+
+.display-3
+  font-size: $display3-size
+  font-weight: $display3-weight
+  line-height: $display-line-height
+
+.display-4
+  font-size: $display4-size
+  font-weight: $display4-weight
+  line-height: $display-line-height
+
+//
+// Horizontal rules
+//
+
+hr
+  margin-top: $hr-margin-y
+  margin-bottom: $hr-margin-y
+  border: 0
+  border-top: $hr-border-width solid $hr-border-color
+
+//
+// Emphasis
+//
+
+small,
+.small
+  font-size: $small-font-size
+  font-weight: $font-weight-normal
+
+mark,
+.mark
+  padding: $mark-padding
+  background-color: $mark-bg
+
+//
+// Lists
+//
+
+.list-unstyled
+  +list-unstyled
+
+// Inline turns list items into inline-block
+.list-inline
+  +list-unstyled
+
+.list-inline-item
+  display: inline-block
+
+  &:not(:last-child)
+    margin-right: $list-inline-padding
+
+//
+// Misc
+//
+
+// Builds on `abbr`
+.initialism
+  font-size: 90%
+  text-transform: uppercase
+
+// Blockquotes
+.blockquote
+  margin-bottom: $spacer
+  font-size: $blockquote-font-size
+
+.blockquote-footer
+  display: block
+  font-size: 80%
+
+  // back to default font-size
+  color: $blockquote-small-color
+
+  &::before
+    content: "\2014 \00A0"
+
+    // em dash, nbsp

static/assets/bootstrap/sass/_utilities.sass

@@ -0,0 +1,15 @@
+@import utilities/align
+@import utilities/background
+@import utilities/borders
+@import utilities/clearfix
+@import utilities/display
+@import utilities/embed
+@import utilities/flex
+@import utilities/float
+@import utilities/position
+@import utilities/screenreaders
+@import utilities/shadows
+@import utilities/sizing
+@import utilities/spacing
+@import utilities/text
+@import utilities/visibility

static/assets/bootstrap/sass/_variables.sass

@@ -0,0 +1,868 @@
+// Variables
+//
+// Variables should follow the `$component-state-property-size` formula for
+// consistent naming. Ex: $nav-link-disabled-color and $modal-content-box-shadow-xs.
+
+//
+// Color system
+//
+
+$white: #fff !default
+$gray-100: #f8f9fa !default
+$gray-200: #e9ecef !default
+$gray-300: #dee2e6 !default
+$gray-400: #ced4da !default
+$gray-500: #adb5bd !default
+$gray-600: #6c757d !default
+$gray-700: #495057 !default
+$gray-800: #343a40 !default
+$gray-900: #212529 !default
+$black: #000 !default
+
+$grays: () !default
+
+// stylelint-disable-next-line scss/dollar-variable-default
+$grays: map-merge(("100": $gray-100, "200": $gray-200, "300": $gray-300, "400": $gray-400, "500": $gray-500, "600": $gray-600, "700": $gray-700, "800": $gray-800, "900": $gray-900), $grays)
+
+$blue: #007bff !default
+$indigo: #6610f2 !default
+$purple: #6f42c1 !default
+$pink: #e83e8c !default
+$red: #dc3545 !default
+$orange: #fd7e14 !default
+$yellow: #ffc107 !default
+$green: #28a745 !default
+$teal: #20c997 !default
+$cyan: #17a2b8 !default
+
+$colors: () !default
+
+// stylelint-disable-next-line scss/dollar-variable-default
+$colors: map-merge(("blue": $blue, "indigo": $indigo, "purple": $purple, "pink": $pink, "red": $red, "orange": $orange, "yellow": $yellow, "green": $green, "teal": $teal, "cyan": $cyan, "white": $white, "gray": $gray-600, "gray-dark": $gray-800), $colors)
+
+$primary: $blue !default
+$secondary: $gray-600 !default
+$success: $green !default
+$info: $cyan !default
+$warning: $yellow !default
+$danger: $red !default
+$light: $gray-100 !default
+$dark: $gray-800 !default
+
+$theme-colors: () !default
+
+// stylelint-disable-next-line scss/dollar-variable-default
+$theme-colors: map-merge(("primary": $primary, "secondary": $secondary, "success": $success, "info": $info, "warning": $warning, "danger": $danger, "light": $light, "dark": $dark), $theme-colors)
+
+// Set a specific jump point for requesting color jumps
+$theme-color-interval: 8% !default
+
+// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
+$yiq-contrasted-threshold: 150 !default
+
+// Customize the light and dark text colors for use in our YIQ color contrast function.
+$yiq-text-dark: $gray-900 !default
+$yiq-text-light: $white !default
+
+// Options
+//
+// Quickly modify global styling by enabling or disabling optional features.
+
+$enable-caret: true !default
+$enable-rounded: true !default
+$enable-shadows: false !default
+$enable-gradients: false !default
+$enable-transitions: true !default
+$enable-hover-media-query: false !default
+
+// Deprecated, no longer affects any compiled CSS
+$enable-grid-classes: true !default
+$enable-print-styles: true !default
+
+// Spacing
+//
+// Control the default styling of most Bootstrap elements by modifying these
+// variables. Mostly focused on spacing.
+// You can add more entries to the $spacers map, should you need more variation.
+
+$spacer: 1rem !default
+$spacers: () !default
+
+// stylelint-disable-next-line scss/dollar-variable-default
+$spacers: map-merge((0: 0, 1: $spacer * 0.25, 2: $spacer * 0.5, 3: $spacer, 4: $spacer * 1.5, 5: $spacer * 3), $spacers)
+
+// This variable affects the `.h-*` and `.w-*` classes.
+$sizes: () !default
+
+// stylelint-disable-next-line scss/dollar-variable-default
+$sizes: map-merge((25: 25%, 50: 50%, 75: 75%, 100: 100%, auto: auto), $sizes)
+
+// Body
+//
+// Settings for the `<body>` element.
+
+$body-bg: $white !default
+$body-color: $gray-900 !default
+
+// Links
+//
+// Style anchor elements.
+
+$link-color: theme-color("primary") !default
+$link-decoration: none !default
+$link-hover-color: darken($link-color, 15%) !default
+$link-hover-decoration: underline !default
+
+// Paragraphs
+//
+// Style p element.
+
+$paragraph-margin-bottom: 1rem !default
+
+// Grid breakpoints
+//
+// Define the minimum dimensions at which your layout will change,
+// adapting to different screen sizes, for use in media queries.
+
+$grid-breakpoints: (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px) !default
+
++_assert-ascending($grid-breakpoints, "$grid-breakpoints")
++_assert-starts-at-zero($grid-breakpoints)
+
+// Grid containers
+//
+// Define the maximum width of `.container` for different screen sizes.
+
+$container-max-widths: (sm: 540px, md: 720px, lg: 960px, xl: 1140px) !default
+
++_assert-ascending($container-max-widths, "$container-max-widths")
+
+// Grid columns
+//
+// Set the number of columns and specify the width of the gutters.
+
+$grid-columns: 12 !default
+$grid-gutter-width: 30px !default
+
+// Components
+//
+// Define common padding and border radius sizes and more.
+
+$line-height-lg: 1.5 !default
+$line-height-sm: 1.5 !default
+
+$border-width: 1px !default
+$border-color: $gray-300 !default
+
+$border-radius: 0.25rem !default
+$border-radius-lg: 0.3rem !default
+$border-radius-sm: 0.2rem !default
+
+$box-shadow-sm: 0 0.125rem 0.25rem rgba($black, 0.075) !default
+$box-shadow: 0 0.5rem 1rem rgba($black, 0.15) !default
+$box-shadow-lg: 0 1rem 3rem rgba($black, 0.175) !default
+
+$component-active-color: $white !default
+$component-active-bg: theme-color("primary") !default
+
+$caret-width: 0.3em !default
+
+$transition-base: all 0.2s ease-in-out !default
+$transition-fade: opacity 0.15s linear !default
+$transition-collapse: height 0.35s ease !default
+
+// Fonts
+//
+// Font, line-height, and color for body text, headings, and more.
+
+// stylelint-disable value-keyword-case
+$font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default
+$font-family-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !default
+$font-family-base: $font-family-sans-serif !default
+
+// stylelint-enable value-keyword-case
+
+$font-size-base: 1rem !default
+
+// Assumes the browser default, typically `16px`
+$font-size-lg: $font-size-base * 1.25 !default
+$font-size-sm: $font-size-base * 0.875 !default
+
+$font-weight-light: 300 !default
+$font-weight-normal: 400 !default
+$font-weight-bold: 700 !default
+
+$font-weight-base: $font-weight-normal !default
+$line-height-base: 1.5 !default
+
+$h1-font-size: $font-size-base * 2.5 !default
+$h2-font-size: $font-size-base * 2 !default
+$h3-font-size: $font-size-base * 1.75 !default
+$h4-font-size: $font-size-base * 1.5 !default
+$h5-font-size: $font-size-base * 1.25 !default
+$h6-font-size: $font-size-base !default
+
+$headings-margin-bottom: $spacer / 2 !default
+$headings-font-family: inherit !default
+$headings-font-weight: 500 !default
+$headings-line-height: 1.2 !default
+$headings-color: inherit !default
+
+$display1-size: 6rem !default
+$display2-size: 5.5rem !default
+$display3-size: 4.5rem !default
+$display4-size: 3.5rem !default
+
+$display1-weight: 300 !default
+$display2-weight: 300 !default
+$display3-weight: 300 !default
+$display4-weight: 300 !default
+$display-line-height: $headings-line-height !default
+
+$lead-font-size: $font-size-base * 1.25 !default
+$lead-font-weight: 300 !default
+
+$small-font-size: 80% !default
+
+$text-muted: $gray-600 !default
+
+$blockquote-small-color: $gray-600 !default
+$blockquote-font-size: $font-size-base * 1.25 !default
+
+$hr-border-color: rgba($black, 0.1) !default
+$hr-border-width: $border-width !default
+
+$mark-padding: 0.2em !default
+
+$dt-font-weight: $font-weight-bold !default
+
+$kbd-box-shadow: inset 0 -0.1rem 0 rgba($black, 0.25) !default
+$nested-kbd-font-weight: $font-weight-bold !default
+
+$list-inline-padding: 0.5rem !default
+
+$mark-bg: #fcf8e3 !default
+
+$hr-margin-y: $spacer !default
+
+// Tables
+//
+// Customizes the `.table` component with basic values, each used across all table variations.
+
+$table-cell-padding: 0.75rem !default
+$table-cell-padding-sm: 0.3rem !default
+
+$table-bg: transparent !default
+$table-accent-bg: rgba($black, 0.05) !default
+$table-hover-bg: rgba($black, 0.075) !default
+$table-active-bg: $table-hover-bg !default
+
+$table-border-width: $border-width !default
+$table-border-color: $gray-300 !default
+
+$table-head-bg: $gray-200 !default
+$table-head-color: $gray-700 !default
+
+$table-dark-bg: $gray-900 !default
+$table-dark-accent-bg: rgba($white, 0.05) !default
+$table-dark-hover-bg: rgba($white, 0.075) !default
+$table-dark-border-color: lighten($gray-900, 7.5%) !default
+$table-dark-color: $body-bg !default
+
+$table-striped-order: odd !default
+
+$table-caption-color: $text-muted !default
+
+// Buttons + Forms
+//
+// Shared variables that are reassigned to `$input-` and `$btn-` specific variables.
+
+$input-btn-padding-y: 0.375rem !default
+$input-btn-padding-x: 0.75rem !default
+$input-btn-line-height: $line-height-base !default
+
+$input-btn-focus-width: 0.2rem !default
+$input-btn-focus-color: rgba($component-active-bg, 0.25) !default
+$input-btn-focus-box-shadow: 0 0 0 $input-btn-focus-width $input-btn-focus-color !default
+
+$input-btn-padding-y-sm: 0.25rem !default
+$input-btn-padding-x-sm: 0.5rem !default
+$input-btn-line-height-sm: $line-height-sm !default
+
+$input-btn-padding-y-lg: 0.5rem !default
+$input-btn-padding-x-lg: 1rem !default
+$input-btn-line-height-lg: $line-height-lg !default
+
+$input-btn-border-width: $border-width !default
+
+// Buttons
+//
+// For each of Bootstrap's buttons, define text, background, and border color.
+
+$btn-padding-y: $input-btn-padding-y !default
+$btn-padding-x: $input-btn-padding-x !default
+$btn-line-height: $input-btn-line-height !default
+
+$btn-padding-y-sm: $input-btn-padding-y-sm !default
+$btn-padding-x-sm: $input-btn-padding-x-sm !default
+$btn-line-height-sm: $input-btn-line-height-sm !default
+
+$btn-padding-y-lg: $input-btn-padding-y-lg !default
+$btn-padding-x-lg: $input-btn-padding-x-lg !default
+$btn-line-height-lg: $input-btn-line-height-lg !default
+
+$btn-border-width: $input-btn-border-width !default
+
+$btn-font-weight: $font-weight-normal !default
+$btn-box-shadow: inset 0 1px 0 rgba($white, 0.15), 0 1px 1px rgba($black, 0.075) !default
+$btn-focus-width: $input-btn-focus-width !default
+$btn-focus-box-shadow: $input-btn-focus-box-shadow !default
+$btn-disabled-opacity: 0.65 !default
+$btn-active-box-shadow: inset 0 3px 5px rgba($black, 0.125) !default
+
+$btn-link-disabled-color: $gray-600 !default
+
+$btn-block-spacing-y: 0.5rem !default
+
+// Allows for customizing button radius independently from global border radius
+$btn-border-radius: $border-radius !default
+$btn-border-radius-lg: $border-radius-lg !default
+$btn-border-radius-sm: $border-radius-sm !default
+
+$btn-transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out !default
+
+// Forms
+
+$label-margin-bottom: 0.5rem !default
+
+$input-padding-y: $input-btn-padding-y !default
+$input-padding-x: $input-btn-padding-x !default
+$input-line-height: $input-btn-line-height !default
+
+$input-padding-y-sm: $input-btn-padding-y-sm !default
+$input-padding-x-sm: $input-btn-padding-x-sm !default
+$input-line-height-sm: $input-btn-line-height-sm !default
+
+$input-padding-y-lg: $input-btn-padding-y-lg !default
+$input-padding-x-lg: $input-btn-padding-x-lg !default
+$input-line-height-lg: $input-btn-line-height-lg !default
+
+$input-bg: $white !default
+$input-disabled-bg: $gray-200 !default
+
+$input-color: $gray-700 !default
+$input-border-color: $gray-400 !default
+$input-border-width: $input-btn-border-width !default
+$input-box-shadow: inset 0 1px 1px rgba($black, 0.075) !default
+
+$input-border-radius: $border-radius !default
+$input-border-radius-lg: $border-radius-lg !default
+$input-border-radius-sm: $border-radius-sm !default
+
+$input-focus-bg: $input-bg !default
+$input-focus-border-color: lighten($component-active-bg, 25%) !default
+$input-focus-color: $input-color !default
+$input-focus-width: $input-btn-focus-width !default
+$input-focus-box-shadow: $input-btn-focus-box-shadow !default
+
+$input-placeholder-color: $gray-600 !default
+$input-plaintext-color: $body-color !default
+
+$input-height-border: $input-border-width * 2 !default
+
+$input-height-inner: $font-size-base * $input-btn-line-height + $input-btn-padding-y * 2 !default
+$input-height: calc(#{$input-height-inner} + #{$input-height-border}) !default
+
+$input-height-inner-sm: $font-size-sm * $input-btn-line-height-sm + $input-btn-padding-y-sm * 2 !default
+$input-height-sm: calc(#{$input-height-inner-sm} + #{$input-height-border}) !default
+
+$input-height-inner-lg: $font-size-lg * $input-btn-line-height-lg + $input-btn-padding-y-lg * 2 !default
+$input-height-lg: calc(#{$input-height-inner-lg} + #{$input-height-border}) !default
+
+$input-transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out !default
+
+$form-text-margin-top: 0.25rem !default
+
+$form-check-input-gutter: 1.25rem !default
+$form-check-input-margin-y: 0.3rem !default
+$form-check-input-margin-x: 0.25rem !default
+
+$form-check-inline-margin-x: 0.75rem !default
+$form-check-inline-input-margin-x: 0.3125rem !default
+
+$form-group-margin-bottom: 1rem !default
+
+$input-group-addon-color: $input-color !default
+$input-group-addon-bg: $gray-200 !default
+$input-group-addon-border-color: $input-border-color !default
+
+$custom-forms-transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out !default
+
+$custom-control-gutter: 1.5rem !default
+$custom-control-spacer-x: 1rem !default
+
+$custom-control-indicator-size: 1rem !default
+$custom-control-indicator-bg: $gray-300 !default
+$custom-control-indicator-bg-size: 50% 50% !default
+$custom-control-indicator-box-shadow: inset 0 0.25rem 0.25rem rgba($black, 0.1) !default
+
+$custom-control-indicator-disabled-bg: $gray-200 !default
+$custom-control-label-disabled-color: $gray-600 !default
+
+$custom-control-indicator-checked-color: $component-active-color !default
+$custom-control-indicator-checked-bg: $component-active-bg !default
+$custom-control-indicator-checked-disabled-bg: rgba(theme-color("primary"), 0.5) !default
+$custom-control-indicator-checked-box-shadow: none !default
+
+$custom-control-indicator-focus-box-shadow: 0 0 0 1px $body-bg, $input-btn-focus-box-shadow !default
+
+$custom-control-indicator-active-color: $component-active-color !default
+$custom-control-indicator-active-bg: lighten($component-active-bg, 35%) !default
+$custom-control-indicator-active-box-shadow: none !default
+
+$custom-checkbox-indicator-border-radius: $border-radius !default
+$custom-checkbox-indicator-icon-checked: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath fill='#{$custom-control-indicator-checked-color}' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26 2.974 7.25 8 2.193z'/%3E%3C/svg%3E"), "#", "%23") !default
+
+$custom-checkbox-indicator-indeterminate-bg: $component-active-bg !default
+$custom-checkbox-indicator-indeterminate-color: $custom-control-indicator-checked-color !default
+$custom-checkbox-indicator-icon-indeterminate: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4'%3E%3Cpath stroke='#{$custom-checkbox-indicator-indeterminate-color}' d='M0 2h4'/%3E%3C/svg%3E"), "#", "%23") !default
+$custom-checkbox-indicator-indeterminate-box-shadow: none !default
+
+$custom-radio-indicator-border-radius: 50% !default
+$custom-radio-indicator-icon-checked: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3E%3Ccircle r='3' fill='#{$custom-control-indicator-checked-color}'/%3E%3C/svg%3E"), "#", "%23") !default
+
+$custom-select-padding-y: 0.375rem !default
+$custom-select-padding-x: 0.75rem !default
+$custom-select-height: $input-height !default
+$custom-select-indicator-padding: 1rem !default
+
+// Extra padding to account for the presence of the background-image based indicator
+$custom-select-line-height: $input-btn-line-height !default
+$custom-select-color: $input-color !default
+$custom-select-disabled-color: $gray-600 !default
+$custom-select-bg: $input-bg !default
+$custom-select-disabled-bg: $gray-200 !default
+$custom-select-bg-size: 8px 10px !default
+
+// In pixels because image dimensions
+$custom-select-indicator-color: $gray-800 !default
+$custom-select-indicator: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'%3E%3Cpath fill='#{$custom-select-indicator-color}' d='M2 0L0 2h4zm0 5L0 3h4z'/%3E%3C/svg%3E"), "#", "%23") !default
+$custom-select-border-width: $input-btn-border-width !default
+$custom-select-border-color: $input-border-color !default
+$custom-select-border-radius: $border-radius !default
+$custom-select-box-shadow: inset 0 1px 2px rgba($black, 0.075) !default
+
+$custom-select-focus-border-color: $input-focus-border-color !default
+$custom-select-focus-width: $input-btn-focus-width !default
+$custom-select-focus-box-shadow: 0 0 0 $custom-select-focus-width rgba($custom-select-focus-border-color, 0.5) !default
+
+$custom-select-font-size-sm: 75% !default
+$custom-select-height-sm: $input-height-sm !default
+
+$custom-select-font-size-lg: 125% !default
+$custom-select-height-lg: $input-height-lg !default
+
+$custom-range-track-width: 100% !default
+$custom-range-track-height: 0.5rem !default
+$custom-range-track-cursor: pointer !default
+$custom-range-track-bg: $gray-300 !default
+$custom-range-track-border-radius: 1rem !default
+$custom-range-track-box-shadow: inset 0 0.25rem 0.25rem rgba($black, 0.1) !default
+
+$custom-range-thumb-width: 1rem !default
+$custom-range-thumb-height: $custom-range-thumb-width !default
+$custom-range-thumb-bg: $component-active-bg !default
+$custom-range-thumb-border: 0 !default
+$custom-range-thumb-border-radius: 1rem !default
+$custom-range-thumb-box-shadow: 0 0.1rem 0.25rem rgba($black, 0.1) !default
+$custom-range-thumb-focus-box-shadow: 0 0 0 1px $body-bg, $input-btn-focus-box-shadow !default
+$custom-range-thumb-active-bg: lighten($component-active-bg, 35%) !default
+
+$custom-file-height: $input-height !default
+$custom-file-height-inner: $input-height-inner !default
+$custom-file-focus-border-color: $input-focus-border-color !default
+$custom-file-focus-box-shadow: $input-btn-focus-box-shadow !default
+$custom-file-disabled-bg: $input-disabled-bg !default
+
+$custom-file-padding-y: $input-btn-padding-y !default
+$custom-file-padding-x: $input-btn-padding-x !default
+$custom-file-line-height: $input-btn-line-height !default
+$custom-file-color: $input-color !default
+$custom-file-bg: $input-bg !default
+$custom-file-border-width: $input-btn-border-width !default
+$custom-file-border-color: $input-border-color !default
+$custom-file-border-radius: $input-border-radius !default
+$custom-file-box-shadow: $input-box-shadow !default
+$custom-file-button-color: $custom-file-color !default
+$custom-file-button-bg: $input-group-addon-bg !default
+$custom-file-text: (en: "Browse") !default
+
+// Form validation
+$form-feedback-margin-top: $form-text-margin-top !default
+$form-feedback-font-size: $small-font-size !default
+$form-feedback-valid-color: theme-color("success") !default
+$form-feedback-invalid-color: theme-color("danger") !default
+
+// Dropdowns
+//
+// Dropdown menu container and contents.
+
+$dropdown-min-width: 10rem !default
+$dropdown-padding-y: 0.5rem !default
+$dropdown-spacer: 0.125rem !default
+$dropdown-bg: $white !default
+$dropdown-border-color: rgba($black, 0.15) !default
+$dropdown-border-radius: $border-radius !default
+$dropdown-border-width: $border-width !default
+$dropdown-divider-bg: $gray-200 !default
+$dropdown-box-shadow: 0 0.5rem 1rem rgba($black, 0.175) !default
+
+$dropdown-link-color: $gray-900 !default
+$dropdown-link-hover-color: darken($gray-900, 5%) !default
+$dropdown-link-hover-bg: $gray-100 !default
+
+$dropdown-link-active-color: $component-active-color !default
+$dropdown-link-active-bg: $component-active-bg !default
+
+$dropdown-link-disabled-color: $gray-600 !default
+
+$dropdown-item-padding-y: 0.25rem !default
+$dropdown-item-padding-x: 1.5rem !default
+
+$dropdown-header-color: $gray-600 !default
+
+// Z-index master list
+//
+// Warning: Avoid customizing these values. They're used for a bird's eye view
+// of components dependent on the z-axis and are designed to all work together.
+
+$zindex-dropdown: 1000 !default
+$zindex-sticky: 1020 !default
+$zindex-fixed: 1030 !default
+$zindex-modal-backdrop: 1040 !default
+$zindex-modal: 1050 !default
+$zindex-popover: 1060 !default
+$zindex-tooltip: 1070 !default
+
+// Navs
+
+$nav-link-padding-y: 0.5rem !default
+$nav-link-padding-x: 1rem !default
+$nav-link-disabled-color: $gray-600 !default
+
+$nav-tabs-border-color: $gray-300 !default
+$nav-tabs-border-width: $border-width !default
+$nav-tabs-border-radius: $border-radius !default
+$nav-tabs-link-hover-border-color: $gray-200 $gray-200 $nav-tabs-border-color !default
+$nav-tabs-link-active-color: $gray-700 !default
+$nav-tabs-link-active-bg: $body-bg !default
+$nav-tabs-link-active-border-color: $gray-300 $gray-300 $nav-tabs-link-active-bg !default
+
+$nav-pills-border-radius: $border-radius !default
+$nav-pills-link-active-color: $component-active-color !default
+$nav-pills-link-active-bg: $component-active-bg !default
+
+$nav-divider-color: $gray-200 !default
+$nav-divider-margin-y: $spacer / 2 !default
+
+// Navbar
+
+$navbar-padding-y: $spacer / 2 !default
+$navbar-padding-x: $spacer !default
+
+$navbar-nav-link-padding-x: 0.5rem !default
+
+$navbar-brand-font-size: $font-size-lg !default
+
+// Compute the navbar-brand padding-y so the navbar-brand will have the same height as navbar-text and nav-link
+$nav-link-height: $font-size-base * $line-height-base + $nav-link-padding-y * 2 !default
+$navbar-brand-height: $navbar-brand-font-size * $line-height-base !default
+$navbar-brand-padding-y: ($nav-link-height - $navbar-brand-height) / 2 !default
+
+$navbar-toggler-padding-y: 0.25rem !default
+$navbar-toggler-padding-x: 0.75rem !default
+$navbar-toggler-font-size: $font-size-lg !default
+$navbar-toggler-border-radius: $btn-border-radius !default
+
+$navbar-dark-color: rgba($white, 0.5) !default
+$navbar-dark-hover-color: rgba($white, 0.75) !default
+$navbar-dark-active-color: $white !default
+$navbar-dark-disabled-color: rgba($white, 0.25) !default
+$navbar-dark-toggler-icon-bg: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='#{$navbar-dark-color}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"), "#", "%23") !default
+$navbar-dark-toggler-border-color: rgba($white, 0.1) !default
+
+$navbar-light-color: rgba($black, 0.5) !default
+$navbar-light-hover-color: rgba($black, 0.7) !default
+$navbar-light-active-color: rgba($black, 0.9) !default
+$navbar-light-disabled-color: rgba($black, 0.3) !default
+$navbar-light-toggler-icon-bg: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='#{$navbar-light-color}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"), "#", "%23") !default
+$navbar-light-toggler-border-color: rgba($black, 0.1) !default
+
+// Pagination
+
+$pagination-padding-y: 0.5rem !default
+$pagination-padding-x: 0.75rem !default
+$pagination-padding-y-sm: 0.25rem !default
+$pagination-padding-x-sm: 0.5rem !default
+$pagination-padding-y-lg: 0.75rem !default
+$pagination-padding-x-lg: 1.5rem !default
+$pagination-line-height: 1.25 !default
+
+$pagination-color: $link-color !default
+$pagination-bg: $white !default
+$pagination-border-width: $border-width !default
+$pagination-border-color: $gray-300 !default
+
+$pagination-focus-box-shadow: $input-btn-focus-box-shadow !default
+$pagination-focus-outline: 0 !default
+
+$pagination-hover-color: $link-hover-color !default
+$pagination-hover-bg: $gray-200 !default
+$pagination-hover-border-color: $gray-300 !default
+
+$pagination-active-color: $component-active-color !default
+$pagination-active-bg: $component-active-bg !default
+$pagination-active-border-color: $pagination-active-bg !default
+
+$pagination-disabled-color: $gray-600 !default
+$pagination-disabled-bg: $white !default
+$pagination-disabled-border-color: $gray-300 !default
+
+// Jumbotron
+
+$jumbotron-padding: 2rem !default
+$jumbotron-bg: $gray-200 !default
+
+// Cards
+
+$card-spacer-y: 0.75rem !default
+$card-spacer-x: 1.25rem !default
+$card-border-width: $border-width !default
+$card-border-radius: $border-radius !default
+$card-border-color: rgba($black, 0.125) !default
+$card-inner-border-radius: calc(#{$card-border-radius} - #{$card-border-width}) !default
+$card-cap-bg: rgba($black, 0.03) !default
+$card-bg: $white !default
+
+$card-img-overlay-padding: 1.25rem !default
+
+$card-group-margin: $grid-gutter-width / 2 !default
+$card-deck-margin: $card-group-margin !default
+
+$card-columns-count: 3 !default
+$card-columns-gap: 1.25rem !default
+$card-columns-margin: $card-spacer-y !default
+
+// Tooltips
+
+$tooltip-font-size: $font-size-sm !default
+$tooltip-max-width: 200px !default
+$tooltip-color: $white !default
+$tooltip-bg: $black !default
+$tooltip-border-radius: $border-radius !default
+$tooltip-opacity: 0.9 !default
+$tooltip-padding-y: 0.25rem !default
+$tooltip-padding-x: 0.5rem !default
+$tooltip-margin: 0 !default
+
+$tooltip-arrow-width: 0.8rem !default
+$tooltip-arrow-height: 0.4rem !default
+$tooltip-arrow-color: $tooltip-bg !default
+
+// Popovers
+
+$popover-font-size: $font-size-sm !default
+$popover-bg: $white !default
+$popover-max-width: 276px !default
+$popover-border-width: $border-width !default
+$popover-border-color: rgba($black, 0.2) !default
+$popover-border-radius: $border-radius-lg !default
+$popover-box-shadow: 0 0.25rem 0.5rem rgba($black, 0.2) !default
+
+$popover-header-bg: darken($popover-bg, 3%) !default
+$popover-header-color: $headings-color !default
+$popover-header-padding-y: 0.5rem !default
+$popover-header-padding-x: 0.75rem !default
+
+$popover-body-color: $body-color !default
+$popover-body-padding-y: $popover-header-padding-y !default
+$popover-body-padding-x: $popover-header-padding-x !default
+
+$popover-arrow-width: 1rem !default
+$popover-arrow-height: 0.5rem !default
+$popover-arrow-color: $popover-bg !default
+
+$popover-arrow-outer-color: fade-in($popover-border-color, 0.05) !default
+
+// Badges
+
+$badge-font-size: 75% !default
+$badge-font-weight: $font-weight-bold !default
+$badge-padding-y: 0.25em !default
+$badge-padding-x: 0.4em !default
+$badge-border-radius: $border-radius !default
+
+$badge-pill-padding-x: 0.6em !default
+
+// Use a higher than normal value to ensure completely rounded edges when
+// customizing padding or font-size on labels.
+$badge-pill-border-radius: 10rem !default
+
+// Modals
+
+// Padding applied to the modal body
+$modal-inner-padding: 1rem !default
+
+$modal-dialog-margin: 0.5rem !default
+$modal-dialog-margin-y-sm-up: 1.75rem !default
+
+$modal-title-line-height: $line-height-base !default
+
+$modal-content-bg: $white !default
+$modal-content-border-color: rgba($black, 0.2) !default
+$modal-content-border-width: $border-width !default
+$modal-content-border-radius: $border-radius-lg !default
+$modal-content-box-shadow-xs: 0 0.25rem 0.5rem rgba($black, 0.5) !default
+$modal-content-box-shadow-sm-up: 0 0.5rem 1rem rgba($black, 0.5) !default
+
+$modal-backdrop-bg: $black !default
+$modal-backdrop-opacity: 0.5 !default
+$modal-header-border-color: $gray-200 !default
+$modal-footer-border-color: $modal-header-border-color !default
+$modal-header-border-width: $modal-content-border-width !default
+$modal-footer-border-width: $modal-header-border-width !default
+$modal-header-padding: 1rem !default
+
+$modal-lg: 800px !default
+$modal-md: 500px !default
+$modal-sm: 300px !default
+
+$modal-transition: transform 0.3s ease-out !default
+
+// Alerts
+//
+// Define alert colors, border radius, and padding.
+
+$alert-padding-y: 0.75rem !default
+$alert-padding-x: 1.25rem !default
+$alert-margin-bottom: 1rem !default
+$alert-border-radius: $border-radius !default
+$alert-link-font-weight: $font-weight-bold !default
+$alert-border-width: $border-width !default
+
+$alert-bg-level: -10 !default
+$alert-border-level: -9 !default
+$alert-color-level: 6 !default
+
+// Progress bars
+
+$progress-height: 1rem !default
+$progress-font-size: $font-size-base * 0.75 !default
+$progress-bg: $gray-200 !default
+$progress-border-radius: $border-radius !default
+$progress-box-shadow: inset 0 0.1rem 0.1rem rgba($black, 0.1) !default
+$progress-bar-color: $white !default
+$progress-bar-bg: theme-color("primary") !default
+$progress-bar-animation-timing: 1s linear infinite !default
+$progress-bar-transition: width 0.6s ease !default
+
+// List group
+
+$list-group-bg: $white !default
+$list-group-border-color: rgba($black, 0.125) !default
+$list-group-border-width: $border-width !default
+$list-group-border-radius: $border-radius !default
+
+$list-group-item-padding-y: 0.75rem !default
+$list-group-item-padding-x: 1.25rem !default
+
+$list-group-hover-bg: $gray-100 !default
+$list-group-active-color: $component-active-color !default
+$list-group-active-bg: $component-active-bg !default
+$list-group-active-border-color: $list-group-active-bg !default
+
+$list-group-disabled-color: $gray-600 !default
+$list-group-disabled-bg: $list-group-bg !default
+
+$list-group-action-color: $gray-700 !default
+$list-group-action-hover-color: $list-group-action-color !default
+
+$list-group-action-active-color: $body-color !default
+$list-group-action-active-bg: $gray-200 !default
+
+// Image thumbnails
+
+$thumbnail-padding: 0.25rem !default
+$thumbnail-bg: $body-bg !default
+$thumbnail-border-width: $border-width !default
+$thumbnail-border-color: $gray-300 !default
+$thumbnail-border-radius: $border-radius !default
+$thumbnail-box-shadow: 0 1px 2px rgba($black, 0.075) !default
+
+// Figures
+
+$figure-caption-font-size: 90% !default
+$figure-caption-color: $gray-600 !default
+
+// Breadcrumbs
+
+$breadcrumb-padding-y: 0.75rem !default
+$breadcrumb-padding-x: 1rem !default
+$breadcrumb-item-padding: 0.5rem !default
+
+$breadcrumb-margin-bottom: 1rem !default
+
+$breadcrumb-bg: $gray-200 !default
+$breadcrumb-divider-color: $gray-600 !default
+$breadcrumb-active-color: $gray-600 !default
+$breadcrumb-divider: quote("/") !default
+
+$breadcrumb-border-radius: $border-radius !default
+
+// Carousel
+
+$carousel-control-color: $white !default
+$carousel-control-width: 15% !default
+$carousel-control-opacity: 0.5 !default
+
+$carousel-indicator-width: 30px !default
+$carousel-indicator-height: 3px !default
+$carousel-indicator-spacer: 3px !default
+$carousel-indicator-active-bg: $white !default
+
+$carousel-caption-width: 70% !default
+$carousel-caption-color: $white !default
+
+$carousel-control-icon-width: 20px !default
+
+$carousel-control-prev-icon-bg: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E"), "#", "%23") !default
+$carousel-control-next-icon-bg: str-replace(url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E"), "#", "%23") !default
+
+$carousel-transition: transform 0.6s ease !default
+
+// Define transform transition first if using multiple transitions (e.g., `transform 2s ease, opacity .5s ease-out`)
+
+// Close
+
+$close-font-size: $font-size-base * 1.5 !default
+$close-font-weight: $font-weight-bold !default
+$close-color: $black !default
+$close-text-shadow: 0 1px 0 $white !default
+
+// Code
+
+$code-font-size: 87.5% !default
+$code-color: $pink !default
+
+$kbd-padding-y: 0.2rem !default
+$kbd-padding-x: 0.4rem !default
+$kbd-font-size: $code-font-size !default
+$kbd-color: $white !default
+$kbd-bg: $gray-900 !default
+
+$pre-color: $gray-900 !default
+$pre-scrollable-max-height: 340px !default
+
+// Printing
+$print-page-size: a3 !default
+$print-body-min-width: map-get($grid-breakpoints, "lg") !default

static/assets/bootstrap/sass/bootstrap-grid.sass

@@ -0,0 +1,31 @@
+/*!
+ * Bootstrap Grid v4.1.2 (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+
+@at-root
+  @-ms-viewport
+    width: device-width
+
+  // stylelint-disable-line at-rule-no-vendor-prefix
+
+html
+  box-sizing: border-box
+  -ms-overflow-style: scrollbar
+
+*,
+*::before,
+*::after
+  box-sizing: inherit
+
+@import functions
+@import variables
+
+@import mixins/breakpoints
+@import mixins/grid-framework
+@import mixins/grid
+
+@import grid
+@import utilities/display
+@import utilities/flex

static/assets/bootstrap/sass/bootstrap-reboot.sass

@@ -0,0 +1,11 @@
+/*!
+ * Bootstrap Reboot v4.1.2 (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+
+@import functions
+@import variables
+@import mixins
+@import reboot

static/assets/bootstrap/sass/bootstrap.sass

@@ -0,0 +1,41 @@
+/*!
+ * Bootstrap v4.1.2 (https://getbootstrap.com/)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+
+@import functions
+@import variables
+@import mixins
+@import root
+@import reboot
+@import type
+@import images
+@import code
+@import grid
+@import tables
+@import forms
+@import buttons
+@import transitions
+@import dropdown
+@import button-group
+@import input-group
+@import custom-forms
+@import nav
+@import navbar
+@import card
+@import breadcrumb
+@import pagination
+@import badge
+@import jumbotron
+@import alert
+@import progress
+@import media
+@import list-group
+@import close
+@import modal
+@import tooltip
+@import popover
+@import carousel
+@import utilities
+@import print

static/assets/bootstrap/sass/mixins/_alert.sass

@@ -0,0 +1,12 @@
+=alert-variant($background, $border, $color)
+  color: $color
+
+  +gradient-bg($background)
+
+  border-color: $border
+
+  hr
+    border-top-color: darken($border, 5%)
+
+  .alert-link
+    color: darken($color, 10%)

static/assets/bootstrap/sass/mixins/_background-variant.sass

@@ -0,0 +1,16 @@
+// stylelint-disable declaration-no-important
+
+// Contextual backgrounds
+
+=bg-variant($parent, $color)
+  #{$parent}
+    background-color: $color !important
+
+  a#{$parent},
+  button#{$parent}
+    +hover-focus
+      background-color: darken($color, 10%) !important
+
+=bg-gradient-variant($parent, $color)
+  #{$parent}
+    background: $color linear-gradient(180deg, mix($body-bg, $color, 15%), $color) repeat-x !important

static/assets/bootstrap/sass/mixins/_badge.sass

@@ -0,0 +1,9 @@
+=badge-variant($bg)
+  color: color-yiq($bg)
+  background-color: $bg
+
+  &[href]
+    +hover-focus
+      color: color-yiq($bg)
+      text-decoration: none
+      background-color: darken($bg, 10%)

static/assets/bootstrap/sass/mixins/_border-radius.sass

@@ -0,0 +1,25 @@
+// Single side border-radius
+
+=border-radius($radius: $border-radius)
+  @if $enable-rounded
+    border-radius: $radius
+
+=border-top-radius($radius)
+  @if $enable-rounded
+    border-top-left-radius: $radius
+    border-top-right-radius: $radius
+
+=border-right-radius($radius)
+  @if $enable-rounded
+    border-top-right-radius: $radius
+    border-bottom-right-radius: $radius
+
+=border-bottom-radius($radius)
+  @if $enable-rounded
+    border-bottom-right-radius: $radius
+    border-bottom-left-radius: $radius
+
+=border-left-radius($radius)
+  @if $enable-rounded
+    border-top-left-radius: $radius
+    border-bottom-left-radius: $radius

static/assets/bootstrap/sass/mixins/_box-shadow.sass

@@ -0,0 +1,3 @@
+=box-shadow($shadow...)
+  @if $enable-shadows
+    box-shadow: $shadow

static/assets/bootstrap/sass/mixins/_breakpoints.sass

@@ -0,0 +1,108 @@
+// Breakpoint viewport sizes and media queries.
+//
+// Breakpoints are defined as a map of (name: minimum width), order from small to large:
+//
+//    (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)
+//
+// The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default.
+
+// Name of the next breakpoint, or null for the last breakpoint.
+//
+//    >> breakpoint-next(sm)
+//    md
+//    >> breakpoint-next(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
+//    md
+//    >> breakpoint-next(sm, $breakpoint-names: (xs sm md lg xl))
+//    md
+@function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints))
+  $n: index($breakpoint-names, $name)
+
+  @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null)
+
+// Minimum breakpoint width. Null for the smallest (first) breakpoint.
+//
+//    >> breakpoint-min(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
+//    576px
+@function breakpoint-min($name, $breakpoints: $grid-breakpoints)
+  $min: map-get($breakpoints, $name)
+
+  @return if($min != 0, $min, null)
+
+// Maximum breakpoint width. Null for the largest (last) breakpoint.
+// The maximum value is calculated as the minimum of the next one less 0.02px
+// to work around the limitations of `min-` and `max-` prefixes and viewports with fractional widths.
+// See https://www.w3.org/TR/mediaqueries-4/#mq-min-max
+// Uses 0.02px rather than 0.01px to work around a current rounding bug in Safari.
+// See https://bugs.webkit.org/show_bug.cgi?id=178261
+//
+//    >> breakpoint-max(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
+//    767.98px
+@function breakpoint-max($name, $breakpoints: $grid-breakpoints)
+  $next: breakpoint-next($name, $breakpoints)
+
+  @return if($next, breakpoint-min($next, $breakpoints) - 0.02px, null)
+
+// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash in front.
+// Useful for making responsive utilities.
+//
+//    >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
+//    ""  (Returns a blank string)
+//    >> breakpoint-infix(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
+//    "-sm"
+@function breakpoint-infix($name, $breakpoints: $grid-breakpoints)
+  @return if(breakpoint-min($name, $breakpoints) == null, "", "-#{$name}")
+
+// Media of at least the minimum breakpoint width. No query for the smallest breakpoint.
+// Makes the @content apply to the given breakpoint and wider.
+=media-breakpoint-up($name, $breakpoints: $grid-breakpoints)
+  $min: breakpoint-min($name, $breakpoints)
+
+  @if $min
+    @media (min-width: $min)
+      @content
+  @else
+    @content
+
+// Media of at most the maximum breakpoint width. No query for the largest breakpoint.
+// Makes the @content apply to the given breakpoint and narrower.
+=media-breakpoint-down($name, $breakpoints: $grid-breakpoints)
+  $max: breakpoint-max($name, $breakpoints)
+
+  @if $max
+    @media (max-width: $max)
+      @content
+  @else
+    @content
+
+// Media that spans multiple breakpoint widths.
+// Makes the @content apply between the min and max breakpoints
+=media-breakpoint-between($lower, $upper, $breakpoints: $grid-breakpoints)
+  $min: breakpoint-min($lower, $breakpoints)
+  $max: breakpoint-max($upper, $breakpoints)
+
+  @if $min != null and $max != null
+    @media (min-width: $min) and (max-width: $max)
+      @content
+  @else if $max == null
+    +media-breakpoint-up($lower, $breakpoints)
+      @content
+  @else if $min == null
+    +media-breakpoint-down($upper, $breakpoints)
+      @content
+
+// Media between the breakpoint's minimum and maximum widths.
+// No minimum for the smallest breakpoint, and no maximum for the largest one.
+// Makes the @content apply only to the given breakpoint, not viewports any wider or narrower.
+=media-breakpoint-only($name, $breakpoints: $grid-breakpoints)
+  $min: breakpoint-min($name, $breakpoints)
+  $max: breakpoint-max($name, $breakpoints)
+
+  @if $min != null and $max != null
+    @media (min-width: $min) and (max-width: $max)
+      @content
+  @else if $max == null
+    +media-breakpoint-up($name, $breakpoints)
+      @content
+  @else if $min == null
+    +media-breakpoint-down($name, $breakpoints)
+      @content

static/assets/bootstrap/sass/mixins/_buttons.sass

@@ -0,0 +1,102 @@
+// Button variants
+//
+// Easily pump out default styles, as well as :hover, :focus, :active,
+// and disabled options for all buttons
+
+=button-variant($background, $border, $hover-background: darken($background, 7.5%), $hover-border: darken($border, 10%), $active-background: darken($background, 10%), $active-border: darken($border, 12.5%))
+  color: color-yiq($background)
+
+  +gradient-bg($background)
+
+  border-color: $border
+
+  +box-shadow($btn-box-shadow)
+
+  +hover
+    color: color-yiq($hover-background)
+
+    +gradient-bg($hover-background)
+
+    border-color: $hover-border
+
+
+  &:focus,
+  &.focus
+    // Avoid using mixin so we can pass custom focus shadow properly
+    @if $enable-shadows
+      box-shadow: $btn-box-shadow, 0 0 0 $btn-focus-width rgba($border, 0.5)
+    @else
+      box-shadow: 0 0 0 $btn-focus-width rgba($border, 0.5)
+
+  // Disabled comes first so active can properly restyle
+  &.disabled,
+  &:disabled
+    color: color-yiq($background)
+    background-color: $background
+    border-color: $border
+
+  &:not(:disabled):not(.disabled):active,
+  &:not(:disabled):not(.disabled).active,
+  .show > &.dropdown-toggle
+    color: color-yiq($active-background)
+    background-color: $active-background
+
+    @if $enable-gradients
+      background-image: none
+
+      // Remove the gradient for the pressed/active state
+
+    border-color: $active-border
+
+    &:focus
+      // Avoid using mixin so we can pass custom focus shadow properly
+      @if $enable-shadows
+        box-shadow: $btn-active-box-shadow, 0 0 0 $btn-focus-width rgba($border, 0.5)
+      @else
+        box-shadow: 0 0 0 $btn-focus-width rgba($border, 0.5)
+
+=button-outline-variant($color, $color-hover: color-yiq($color), $active-background: $color, $active-border: $color)
+  color: $color
+  background-color: transparent
+  background-image: none
+  border-color: $color
+
+  &:hover
+    color: $color-hover
+    background-color: $active-background
+    border-color: $active-border
+
+  &:focus,
+  &.focus
+    box-shadow: 0 0 0 $btn-focus-width rgba($color, 0.5)
+
+  &.disabled,
+  &:disabled
+    color: $color
+    background-color: transparent
+
+  &:not(:disabled):not(.disabled):active,
+  &:not(:disabled):not(.disabled).active,
+  .show > &.dropdown-toggle
+    color: color-yiq($active-background)
+    background-color: $active-background
+    border-color: $active-border
+
+    &:focus
+      // Avoid using mixin so we can pass custom focus shadow properly
+      @if $enable-shadows and $btn-active-box-shadow != none
+        box-shadow: $btn-active-box-shadow, 0 0 0 $btn-focus-width rgba($color, 0.5)
+      @else
+        box-shadow: 0 0 0 $btn-focus-width rgba($color, 0.5)
+
+// Button sizes
+=button-size($padding-y, $padding-x, $font-size, $line-height, $border-radius)
+  padding: $padding-y $padding-x
+  font-size: $font-size
+  line-height: $line-height
+
+  // Manually declare to provide an override to the browser default
+  @if $enable-rounded
+    border-radius: $border-radius
+  @else
+    border-radius: 0

static/assets/bootstrap/sass/mixins/_caret.sass

@@ -0,0 +1,56 @@
+=caret-down
+  border-top: $caret-width solid
+  border-right: $caret-width solid transparent
+  border-bottom: 0
+  border-left: $caret-width solid transparent
+
+=caret-up
+  border-top: 0
+  border-right: $caret-width solid transparent
+  border-bottom: $caret-width solid
+  border-left: $caret-width solid transparent
+
+=caret-right
+  border-top: $caret-width solid transparent
+  border-right: 0
+  border-bottom: $caret-width solid transparent
+  border-left: $caret-width solid
+
+=caret-left
+  border-top: $caret-width solid transparent
+  border-right: $caret-width solid
+  border-bottom: $caret-width solid transparent
+
+=caret($direction: down)
+  @if $enable-caret
+    &::after
+      display: inline-block
+      width: 0
+      height: 0
+      margin-left: $caret-width * 0.85
+      vertical-align: $caret-width * 0.85
+      content: ""
+
+      @if $direction == down
+        +caret-down
+      @else if $direction == up
+        +caret-up
+      @else if $direction == right
+        +caret-right
+
+    @if $direction == left
+      &::after
+        display: none
+
+      &::before
+        display: inline-block
+        width: 0
+        height: 0
+        margin-right: $caret-width * 0.85
+        vertical-align: $caret-width * 0.85
+        content: ""
+
+        +caret-left
+
+    &:empty::after
+      margin-left: 0

static/assets/bootstrap/sass/mixins/_clearfix.sass

@@ -0,0 +1,5 @@
+=clearfix
+  &::after
+    display: block
+    clear: both
+    content: ""

static/assets/bootstrap/sass/mixins/_float.sass

@@ -0,0 +1,10 @@
+// stylelint-disable declaration-no-important
+
+=float-left
+  float: left !important
+
+=float-right
+  float: right !important
+
+=float-none
+  float: none !important

static/assets/bootstrap/sass/mixins/_forms.sass

@@ -0,0 +1,118 @@
+// Form control focus state
+//
+// Generate a customized focus state and for any input with the specified color,
+// which defaults to the `$input-focus-border-color` variable.
+//
+// We highly encourage you to not customize the default value, but instead use
+// this to tweak colors on an as-needed basis. This aesthetic change is based on
+// WebKit's default styles, but applicable to a wider range of browsers. Its
+// usability and accessibility should be taken into account with any change.
+//
+// Example usage: change the default blue border and shadow to white for better
+// contrast against a dark gray background.
+=form-control-focus
+  &:focus
+    color: $input-focus-color
+    background-color: $input-focus-bg
+    border-color: $input-focus-border-color
+    outline: 0
+
+    // Avoid using mixin so we can pass custom focus shadow properly
+    @if $enable-shadows
+      box-shadow: $input-box-shadow, $input-focus-box-shadow
+    @else
+      box-shadow: $input-focus-box-shadow
+
+=form-validation-state($state, $color)
+  .#{$state}-feedback
+    display: none
+    width: 100%
+    margin-top: $form-feedback-margin-top
+    font-size: $form-feedback-font-size
+    color: $color
+
+  .#{$state}-tooltip
+    position: absolute
+    top: 100%
+    z-index: 5
+    display: none
+    max-width: 100%
+
+    // Contain to parent when possible
+    padding: .5rem
+    margin-top: .1rem
+    font-size: .875rem
+    line-height: 1
+    color: $white
+    background-color: rgba($color, 0.8)
+    border-radius: .2rem
+
+  .form-control,
+  .custom-select
+    .was-validated &:#{$state},
+    &.is-#{$state}
+      border-color: $color
+
+      &:focus
+        border-color: $color
+        box-shadow: 0 0 0 $input-focus-width rgba($color, 0.25)
+
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip
+        display: block
+
+  .form-control-file
+    .was-validated &:#{$state},
+    &.is-#{$state}
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip
+        display: block
+
+  .form-check-input
+    .was-validated &:#{$state},
+    &.is-#{$state}
+      ~ .form-check-label
+        color: $color
+
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip
+        display: block
+
+  .custom-control-input
+    .was-validated &:#{$state},
+    &.is-#{$state}
+      ~ .custom-control-label
+        color: $color
+
+        &::before
+          background-color: lighten($color, 25%)
+
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip
+        display: block
+
+      &:checked
+        ~ .custom-control-label::before
+          +gradient-bg(lighten($color, 10%))
+
+      &:focus
+        ~ .custom-control-label::before
+          box-shadow: 0 0 0 1px $body-bg, 0 0 0 $input-focus-width rgba($color, 0.25)
+
+  // custom file
+  .custom-file-input
+    .was-validated &:#{$state},
+    &.is-#{$state}
+      ~ .custom-file-label
+        border-color: $color
+
+        &::before
+          border-color: inherit
+
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip
+        display: block
+
+      &:focus
+        ~ .custom-file-label
+          box-shadow: 0 0 0 $input-focus-width rgba($color, 0.25)

static/assets/bootstrap/sass/mixins/_gradients.sass

@@ -0,0 +1,40 @@
+// Gradients
+
+=gradient-bg($color)
+  @if $enable-gradients
+    background: $color linear-gradient(180deg, mix($body-bg, $color, 15%), $color) repeat-x
+  @else
+    background-color: $color
+
+// Horizontal gradient, from left to right
+//
+// Creates two color stops, start and end, by specifying a color and position for each color stop.
+=gradient-x($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%)
+  background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent)
+  background-repeat: repeat-x
+
+// Vertical gradient, from top to bottom
+//
+// Creates two color stops, start and end, by specifying a color and position for each color stop.
+=gradient-y($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%)
+  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent)
+  background-repeat: repeat-x
+
+=gradient-directional($start-color: $gray-700, $end-color: $gray-800, $deg: 45deg)
+  background-image: linear-gradient($deg, $start-color, $end-color)
+  background-repeat: repeat-x
+
+=gradient-x-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red)
+  background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color)
+  background-repeat: no-repeat
+
+=gradient-y-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red)
+  background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color)
+  background-repeat: no-repeat
+
+=gradient-radial($inner-color: $gray-700, $outer-color: $gray-800)
+  background-image: radial-gradient(circle, $inner-color, $outer-color)
+  background-repeat: no-repeat
+
+=gradient-striped($color: rgba($white, 0.15), $angle: 45deg)
+  background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent)

static/assets/bootstrap/sass/mixins/_grid-framework.sass

@@ -0,0 +1,62 @@
+// Framework grid generation
+//
+// Used only by Bootstrap to generate the correct number of grid classes given
+// any value of `$grid-columns`.
+
+=make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints)
+  // Common properties for all breakpoints
+  %grid-column
+    position: relative
+    width: 100%
+    min-height: 1px
+
+    // Prevent columns from collapsing when empty
+    padding-right: $gutter / 2
+    padding-left: $gutter / 2
+
+  @each $breakpoint in map-keys($breakpoints)
+    $infix: breakpoint-infix($breakpoint, $breakpoints)
+
+    // Allow columns to stretch full width below their breakpoints
+    @for $i from 1 through $columns
+      .col#{$infix}-#{$i}
+        @extend %grid-column
+
+    .col#{$infix},
+    .col#{$infix}-auto
+      @extend %grid-column
+
+    +media-breakpoint-up($breakpoint, $breakpoints)
+      // Provide basic `.col-{bp}` classes for equal-width flexbox columns
+      .col#{$infix}
+        flex-basis: 0
+        flex-grow: 1
+        max-width: 100%
+
+      .col#{$infix}-auto
+        flex: 0 0 auto
+        width: auto
+        max-width: none
+
+        // Reset earlier grid tiers
+
+      @for $i from 1 through $columns
+        .col#{$infix}-#{$i}
+          +make-col($i, $columns)
+
+      .order#{$infix}-first
+        order: -1
+
+      .order#{$infix}-last
+        order: $columns + 1
+
+      @for $i from 0 through $columns
+        .order#{$infix}-#{$i}
+          order: $i
+
+      // `$columns - 1` because offsetting by the width of an entire row isn't possible
+      @for $i from 0 through $columns - 1
+        @if not ($infix == "" and $i == 0)
+          // Avoid emitting useless .offset-0
+          .offset#{$infix}-#{$i}
+            +make-col-offset($i, $columns)

static/assets/bootstrap/sass/mixins/_grid.sass

@@ -0,0 +1,48 @@
+/// Grid system
+//
+// Generate semantic grid columns with these mixins.
+
+=make-container
+  width: 100%
+  padding-right: $grid-gutter-width / 2
+  padding-left: $grid-gutter-width / 2
+  margin-right: auto
+  margin-left: auto
+
+// For each breakpoint, define the maximum width of the container in a media query
+=make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints)
+  @each $breakpoint, $container-max-width in $max-widths
+    +media-breakpoint-up($breakpoint, $breakpoints)
+      max-width: $container-max-width
+
+=make-row
+  display: flex
+  flex-wrap: wrap
+  margin-right: $grid-gutter-width / -2
+  margin-left: $grid-gutter-width / -2
+
+=make-col-ready
+  position: relative
+
+  // Prevent columns from becoming too narrow when at smaller grid tiers by
+  // always setting `width: 100%;`. This works because we use `flex` values
+  // later on to override this initial width.
+  width: 100%
+  min-height: 1px
+
+  // Prevent collapsing
+  padding-right: $grid-gutter-width / 2
+  padding-left: $grid-gutter-width / 2
+
+=make-col($size, $columns: $grid-columns)
+  flex: 0 0 percentage($size / $columns)
+
+  // Add a `max-width` to ensure content within each column does not blow out
+  // the width of the column. Applies to IE10+ and Firefox. Chrome and Safari
+  // do not appear to require this.
+  max-width: percentage($size / $columns)
+
+=make-col-offset($size, $columns: $grid-columns)
+  $num: $size / $columns
+
+  margin-left: if($num == 0, 0, percentage($num))

static/assets/bootstrap/sass/mixins/_hover.sass

@@ -0,0 +1,31 @@
+// Hover mixin and `$enable-hover-media-query` are deprecated.
+//
+// Originally added during our alphas and maintained during betas, this mixin was
+// designed to prevent `:hover` stickiness on iOS-an issue where hover styles
+// would persist after initial touch.
+//
+// For backward compatibility, we've kept these mixins and updated them to
+// always return their regular pseudo-classes instead of a shimmed media query.
+//
+// Issue: https://github.com/twbs/bootstrap/issues/25195
+
+=hover
+  &:hover
+    @content
+
+=hover-focus
+  &:hover,
+  &:focus
+    @content
+
+=plain-hover-focus
+  &,
+  &:hover,
+  &:focus
+    @content
+
+=hover-focus-active
+  &:hover,
+  &:focus,
+  &:active
+    @content

static/assets/bootstrap/sass/mixins/_image.sass

@@ -0,0 +1,32 @@
+// Image Mixins
+// - Responsive image
+// - Retina image
+
+// Responsive image
+//
+// Keep images from scaling beyond the width of their parents.
+
+=img-fluid
+  // Part 1: Set a maximum relative to the parent
+  max-width: 100%
+
+  // Part 2: Override the height to auto, otherwise images will be stretched
+  // when setting a width and height attribute on the img element.
+  height: auto
+
+// Retina image
+//
+// Short retina mixin for setting background-image and -size.
+
+// stylelint-disable indentation, media-query-list-comma-newline-after
+=img-retina($file-1x, $file-2x, $width-1x, $height-1x)
+  background-image: url($file-1x)
+
+  // Autoprefixer takes care of adding -webkit-min-device-pixel-ratio and -o-min-device-pixel-ratio,
+  // but doesn't convert dppx=>dpi.
+  // There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard.
+  // Compatibility info: https://caniuse.com/#feat=css-media-resolution
+  @media only screen and (min-resolution: 192dpi), only screen and (min-resolution: 2dppx)
+    // Standardized
+    background-image: url($file-2x)
+    background-size: $width-1x $height-1x

static/assets/bootstrap/sass/mixins/_list-group.sass

@@ -0,0 +1,17 @@
+// List Groups
+
+=list-group-item-variant($state, $background, $color)
+  .list-group-item-#{$state}
+    color: $color
+    background-color: $background
+
+    &.list-group-item-action
+      +hover-focus
+        color: $color
+        background-color: darken($background, 5%)
+
+
+      &.active
+        color: $white
+        background-color: $color
+        border-color: $color

static/assets/bootstrap/sass/mixins/_lists.sass

@@ -0,0 +1,6 @@
+// Lists
+
+// Unstyled keeps list items block level, just removes default browser padding and list-style
+=list-unstyled
+  padding-left: 0
+  list-style: none

static/assets/bootstrap/sass/mixins/_nav-divider.sass

@@ -0,0 +1,9 @@
+// Horizontal dividers
+//
+// Dividers (basically an hr) within dropdowns and nav lists
+
+=nav-divider($color: $nav-divider-color, $margin-y: $nav-divider-margin-y)
+  height: 0
+  margin: $margin-y 0
+  overflow: hidden
+  border-top: 1px solid $color

static/assets/bootstrap/sass/mixins/_pagination.sass

@@ -0,0 +1,16 @@
+// Pagination
+
+=pagination-size($padding-y, $padding-x, $font-size, $line-height, $border-radius)
+  .page-link
+    padding: $padding-y $padding-x
+    font-size: $font-size
+    line-height: $line-height
+
+  .page-item
+    &:first-child
+      .page-link
+        +border-left-radius($border-radius)
+
+    &:last-child
+      .page-link
+        +border-right-radius($border-radius)

static/assets/bootstrap/sass/mixins/_reset-text.sass

@@ -0,0 +1,21 @@
+=reset-text
+  font-family: $font-family-base
+
+  // We deliberately do NOT reset font-size or word-wrap.
+  font-style: normal
+  font-weight: $font-weight-normal
+  line-height: $line-height-base
+  text-align: left
+
+  // Fallback for where `start` is not supported
+  text-align: start
+
+  // stylelint-disable-line declaration-block-no-duplicate-properties
+  text-decoration: none
+  text-shadow: none
+  text-transform: none
+  letter-spacing: normal
+  word-break: normal
+  word-spacing: normal
+  white-space: normal
+  line-break: auto

static/assets/bootstrap/sass/mixins/_resize.sass

@@ -0,0 +1,9 @@
+// Resize anything
+
+=resizable($direction)
+  overflow: auto
+
+  // Per CSS3 UI, `resize` only applies when `overflow` isn't `visible`
+  resize: $direction
+
+  // Options: horizontal, vertical, both

static/assets/bootstrap/sass/mixins/_screen-reader.sass

@@ -0,0 +1,30 @@
+// Only display content to screen readers
+//
+// See: https://a11yproject.com/posts/how-to-hide-content/
+// See: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
+
+=sr-only
+  position: absolute
+  width: 1px
+  height: 1px
+  padding: 0
+  overflow: hidden
+  clip: rect(0, 0, 0, 0)
+  white-space: nowrap
+  border: 0
+
+// Use in conjunction with .sr-only to only display content when it's focused.
+//
+// Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
+//
+// Credit: HTML5 Boilerplate
+
+=sr-only-focusable
+  &:active,
+  &:focus
+    position: static
+    width: auto
+    height: auto
+    overflow: visible
+    clip: auto
+    white-space: normal

static/assets/bootstrap/sass/mixins/_size.sass

@@ -0,0 +1,5 @@
+// Sizing shortcuts
+
+=size($width, $height: $width)
+  width: $width
+  height: $height

static/assets/bootstrap/sass/mixins/_table-row.sass

@@ -0,0 +1,23 @@
+// Tables
+
+=table-row-variant($state, $background)
+  // Exact selectors below required to override `.table-striped` and prevent
+  // inheritance to nested tables.
+  .table-#{$state}
+    &,
+    > th,
+    > td
+      background-color: $background
+
+  // Hover states for `.table-hover`
+  // Note: this is not available for cells or rows within `thead` or `tfoot`.
+  .table-hover
+    $hover-background: darken($background, 5%)
+
+    .table-#{$state}
+      +hover
+        background-color: $hover-background
+
+        > td,
+        > th
+          background-color: $hover-background

static/assets/bootstrap/sass/mixins/_text-emphasis.sass

@@ -0,0 +1,11 @@
+// stylelint-disable declaration-no-important
+
+// Typography
+
+=text-emphasis-variant($parent, $color)
+  #{$parent}
+    color: $color !important
+
+  a#{$parent}
+    +hover-focus
+      color: darken($color, 10%) !important

static/assets/bootstrap/sass/mixins/_text-hide.sass

@@ -0,0 +1,11 @@
+// CSS image replacement
+=text-hide($ignore-warning: false)
+  // stylelint-disable-next-line font-family-no-missing-generic-family-keyword
+  font: 0/0 a
+  color: transparent
+  text-shadow: none
+  background-color: transparent
+  border: 0
+
+  @if $ignore-warning != true
+    @warn "The `text-hide()` mixin has been deprecated as of v4.1.0. It will be removed entirely in v5."

static/assets/bootstrap/sass/mixins/_text-truncate.sass

@@ -0,0 +1,7 @@
+// Text truncate
+// Requires inline-block or block for proper styling
+
+=text-truncate
+  overflow: hidden
+  text-overflow: ellipsis
+  white-space: nowrap

static/assets/bootstrap/sass/mixins/_transition.sass

@@ -0,0 +1,9 @@
+=transition($transition...)
+  @if $enable-transitions
+    @if length($transition) == 0
+      transition: $transition-base
+    @else
+      transition: $transition
+
+  @media screen and (prefers-reduced-motion: reduce)
+    transition: none

static/assets/bootstrap/sass/mixins/_visibility.sass

@@ -0,0 +1,6 @@
+// stylelint-disable declaration-no-important
+
+// Visibility
+
+=invisible($visibility)
+  visibility: $visibility !important

static/assets/bootstrap/sass/utilities/_align.sass

@@ -0,0 +1,20 @@
+// stylelint-disable declaration-no-important
+
+.align-baseline
+  vertical-align: baseline !important
+
+// Browser default
+.align-top
+  vertical-align: top !important
+
+.align-middle
+  vertical-align: middle !important
+
+.align-bottom
+  vertical-align: bottom !important
+
+.align-text-bottom
+  vertical-align: text-bottom !important
+
+.align-text-top
+  vertical-align: text-top !important

static/assets/bootstrap/sass/utilities/_background.sass

@@ -0,0 +1,14 @@
+// stylelint-disable declaration-no-important
+
+@each $color, $value in $theme-colors
+  +bg-variant(".bg-#{$color}", $value)
+
+@if $enable-gradients
+  @each $color, $value in $theme-colors
+    +bg-gradient-variant(".bg-gradient-#{$color}", $value)
+
+.bg-white
+  background-color: $white !important
+
+.bg-transparent
+  background-color: transparent !important

static/assets/bootstrap/sass/utilities/_borders.sass

@@ -0,0 +1,71 @@
+// stylelint-disable declaration-no-important
+
+//
+// Border
+//
+
+.border
+  border: $border-width solid $border-color !important
+
+.border-top
+  border-top: $border-width solid $border-color !important
+
+.border-right
+  border-right: $border-width solid $border-color !important
+
+.border-bottom
+  border-bottom: $border-width solid $border-color !important
+
+.border-left
+  border-left: $border-width solid $border-color !important
+
+.border-0
+  border: 0 !important
+
+.border-top-0
+  border-top: 0 !important
+
+.border-right-0
+  border-right: 0 !important
+
+.border-bottom-0
+  border-bottom: 0 !important
+
+.border-left-0
+  border-left: 0 !important
+
+@each $color, $value in $theme-colors
+  .border-#{$color}
+    border-color: $value !important
+
+.border-white
+  border-color: $white !important
+
+//
+// Border-radius
+//
+
+.rounded
+  border-radius: $border-radius !important
+
+.rounded-top
+  border-top-left-radius: $border-radius !important
+  border-top-right-radius: $border-radius !important
+
+.rounded-right
+  border-top-right-radius: $border-radius !important
+  border-bottom-right-radius: $border-radius !important
+
+.rounded-bottom
+  border-bottom-right-radius: $border-radius !important
+  border-bottom-left-radius: $border-radius !important
+
+.rounded-left
+  border-top-left-radius: $border-radius !important
+  border-bottom-left-radius: $border-radius !important
+
+.rounded-circle
+  border-radius: 50% !important
+
+.rounded-0
+  border-radius: 0 !important

static/assets/bootstrap/sass/utilities/_clearfix.sass

@@ -0,0 +1,2 @@
+.clearfix
+  +clearfix