Add responsiveness for footer. Update gulpjs, package.json and bootstrap sass

src/styles/_breakpoints.sass

@@ -3,6 +3,6 @@
 // md 576px - 757.98px
 // lg 992px to 1199.98px
 // xl 1200px and up
-@import ../../node_modules/bootstrap/sass/functions
-@import ../../node_modules/bootstrap/sass/variables
-@import ../../node_modules/bootstrap/sass/mixins/breakpoints
+@import ../../static/assets/bootstrap/sass/functions
+@import ../../static/assets/bootstrap/sass/variables
+@import ../../static/assets/bootstrap/sass/mixins/breakpoints

src/styles/_footer.sass

@@ -1,36 +1,42 @@
 footer.container-fluid
 	background: #F8F8FB
 	border-top: 1px solid #E3E3E6
-	margin-top: 136px
+	margin-top: 72px
+	+media-breakpoint-up(sm)
+		margin-top: 112px
+	+media-breakpoint-up(lg)
+		margin-top: 136px
 	.container
 		margin-top: 11px
 		max-width: 1200px
 	.row
 		max-width: 1200px
 	.col-4
-		// background: blue
-		// flex: 0 0 100%
-    // max-width: 100%
-		max-width: 100%
+		flex: 0 0 100%
     flex-basis: 100%
+		max-width: 100%
     margin-bottom: 60px
-		padding-left: 20px
-		padding-right: 20px
+		padding: 0 20px 56px
+		+media-breakpoint-up(sm)
+			padding: 0 20px 32px
 		+media-breakpoint-up(md)
-			// background: lightcoral
 			flex: 0 0 33%
+			padding-bottom: 0
 			max-width: 33%
 			margin-bottom: 0px
 	.col
-		padding-left: 20px
-		padding-right: 20px
+		flex-basis: 50%
+		padding: 0 20px 32px
+		+media-breakpoint-up(sm)
+			flex-basis: 0
+			padding-bottom: 0
 	h5
+		color: $dark
 		font-weight: 600
 		font-size: 15px
-		color: $dark
 		letter-spacing: 0.6px
-		text-transform: uppercase
 		margin-bottom: 12px
+		text-transform: uppercase
 	p
 		color: #6d6d6e
 		line-height: 30px