Use native scrollbars

src/styles/plugins/_js_perfectscrollbar.sass

@@ -1,147 +0,0 @@
-$color-scrollbars-base: lighten($color-background-nav, 25%)
-
-.ps-container
-	.ps-scrollbar-y
-		opacity: 0
-		transition: opacity 150ms ease-in-out
-
-	&:hover
-		.ps-scrollbar-y
-			opacity: 1
-
-
-/* perfect-scrollbar v0.6.3 */
-.ps-container
-	-ms-touch-action: none
-	overflow: hidden !important
-
-.ps-container.ps-active-x > .ps-scrollbar-x-rail,
-.ps-container.ps-active-y > .ps-scrollbar-y-rail
-	display: block
-
-.ps-container > .ps-scrollbar-x-rail
-	display: none
-	position: absolute
-	/* please don't change 'position' */
-	-webkit-border-radius: 4px
-	-moz-border-radius: 4px
-	-ms-border-radius: 4px
-	border-radius: 4px
-	opacity: 0
-	-webkit-transition: background-color .2s linear, opacity .2s linear
-	-moz-transition: background-color .2s linear, opacity .2s linear
-	-o-transition: background-color .2s linear, opacity .2s linear
-	transition: background-color .2s linear, opacity .2s linear
-	bottom: 3px
-	/* there must be 'bottom' for ps-scrollbar-x-rail */
-	height: 8px
-
-.ps-container > .ps-scrollbar-x-rail > .ps-scrollbar-x
-	position: absolute
-	/* please don't change 'position' */
-	background-color: $color-scrollbars-base
-	-webkit-border-radius: 4px
-	-moz-border-radius: 4px
-	-ms-border-radius: 4px
-	border-radius: 4px
-	-webkit-transition: background-color .2s linear
-	-moz-transition: background-color .2s linear
-	-o-transition: background-color .2s linear
-	transition: background-color .2s linear
-	bottom: 0
-	/* there must be 'bottom' for ps-scrollbar-x */
-	height: 5px
-
-.ps-container > .ps-scrollbar-y-rail
-	display: none
-	position: absolute
-	/* please don't change 'position' */
-	-webkit-border-radius: 4px
-	-moz-border-radius: 4px
-	-ms-border-radius: 4px
-	border-radius: 4px
-	opacity: 0.6
-	-webkit-transition: background-color .2s linear, opacity .2s linear
-	-moz-transition: background-color .2s linear, opacity .2s linear
-	-o-transition: background-color .2s linear, opacity .2s linear
-	transition: background-color .2s linear, opacity .2s linear
-	right: 3px
-	/* there must be 'right' for ps-scrollbar-y-rail */
-	width: 5px
-	margin:
-		top: 5px
-		bottom: 5px
-
-#project_nav.ps-container > .ps-scrollbar-y-rail
-	margin-top: $project_header-height + 10
-
-.ps-container > .ps-scrollbar-y-rail > .ps-scrollbar-y
-	position: absolute
-	/* please don't change 'position' */
-	background-color: $color-scrollbars-base
-	-webkit-border-radius: 4px
-	-moz-border-radius: 4px
-	-ms-border-radius: 4px
-	border-radius: 4px
-	-webkit-transition: background-color .2s linear
-	-moz-transition: background-color .2s linear
-	-o-transition: background-color .2s linear
-	transition: background-color .2s linear, height .2s linear
-	right: 0
-	/* there must be 'right' for ps-scrollbar-y */
-	width: 5px
-
-
-.ps-container.ps-in-scrolling
-	pointer-events: none
-
-	&.ps-x
-		.ps-scrollbar-x-rail
-			background-color: rgba($color-scrollbars-base, .2)
-			opacity: 0.9
-			.ps-scrollbar-x
-				background-color: rgba($color-scrollbars-base, .2)
-
-	&.ps-y
-		.ps-scrollbar-y-rail
-			background-color: rgba($color-scrollbars-base, .2)
-			opacity: 0.9
-			.ps-scrollbar-y
-				background-color: rgba($color-scrollbars-base, .2)
-
-
-.ps-container:hover
-
-	.ps-scrollbar-x-rail, .ps-scrollbar-y-rail
-		opacity: 0.6
-
-		&:hover
-			background-color: rgba($color-scrollbars-base, .2)
-			opacity: 0.9
-
-			.ps-scrollbar-x, .ps-scrollbar-y
-				background-color: $color-scrollbars-base
-
-
-	&.ps-in-scrolling
-		pointer-events: none
-
-		&.ps-x
-			.ps-scrollbar-x-rail
-				background-color: rgba($color-scrollbars-base, .2)
-				opacity: 0.9
-
-				.ps-scrollbar-x
-					background-color:  rgba($color-scrollbars-base, .1)
-
-		&.ps-y
-			.ps-scrollbar-y-rail
-				background-color: rgba($color-scrollbars-base, .2)
-				opacity: 0.9
-
-				.ps-scrollbar-y
-					background-color: rgba($color-scrollbars-base, .1)
-
-
-
-