Added track preview funciton

public/css/modules/track-preview.css

@@ -0,0 +1,22 @@
+.preview_controls {
+	opacity: 0;
+  display: block;
+  background: rgba(0, 0, 0, .5);
+	width: 56px;
+	height: 56px;
+	text-align: center;
+	line-height: 56px;
+  position: absolute;
+	border-radius: 5px;
+  top: 0;
+  right: 0;
+}
+.preview_playlist_controls{
+	cursor:pointer;
+}
+
+a.single-cover {
+  position: relative;
+  display: inline-block;
+  color: white;
+}

public/css/style.css

@@ -14,3 +14,4 @@
 @import './modules/settings.css';
 @import './modules/main-search.css';
 @import './modules/download-tab.css';
+@import './modules/track-preview.css';