Add new navbar, jumbotron, cards, and footer components.

src/styles/_navbar.sass

@@ -0,0 +1,44 @@
+.navbar
+  background: #fff
+  height: auto
+  min-height: 48px
+  // height: 48px
+  +media-breakpoint-up(md)
+    height: 56px
+  .logo
+    display: flex
+    justify-content: center
+  .navbar-toggler
+    padding: 0
+  .navbar-nav
+    margin-bottom: 15px;
+    margin-top: 15px;
+    +media-breakpoint-up(md)
+      margin: 0
+  .nav-item .nav-link
+    font-size: 18px
+    color: $dark
+    // padding: 16px 8px 16px 34px
+    padding: 3vh 8px 3vh 34px
+    +media-breakpoint-up(lg)
+      padding: 6px 18px
+    &:hover
+      color: $muted
+  .dropdown-toggle::after
+    display:none
+  .navbar-toggler
+    border: 0
+    outline: none
+    span
+      width: 20px
+      height: 2px
+      background: $dark
+      display: block
+      margin-bottom: 4px
+      &:last-of-type
+        margin-bottom: 0
+  .collapsing
+    transition: none
+    display: none
+  .show
+    padding-bottom: 75vh