Removing test scrolling; Icon library to prevent cache lag

src/scss/components/_header.scss

@@ -67,10 +67,13 @@ main {
 			margin-bottom: -10px;
 
 			.icon {
-				height: 1.2rem;
-				margin-bottom: 5px;
-				padding-right: 10px;
+				margin-bottom: 6px;
+				padding-right: 6px;
 				margin-left: 10px;
+
+				svg {
+					height: 1.2rem;
+				}
 			}
 
 			h1 {

src/scss/components/_playback-controls.scss

@@ -235,8 +235,9 @@
 						margin-bottom: 0;
 
 						.icon {
-							width: 12px;
-							height: 12px;
+							svg {
+								height: 12px;
+							}
 						}
 					}
 					&.previous {

src/scss/components/_sidebar.scss

@@ -57,7 +57,7 @@ aside{
 			line-height: 18px;
 
 			.icon {
-				padding-right: 10px;
+				padding-right: 6px;
 				vertical-align: top;
 				margin-top: 0;
 
@@ -139,5 +139,15 @@ aside{
 		.close {
 			display: block;
 		}
+
+		nav {
+			section {
+				padding-bottom: 10px;
+
+				title {
+					padding-bottom: 2px;
+				}
+			}
+		}
 	}
 }