Reverts back to black background. We need to fix some other things before moving to grey background.

css/main.css

@@ -9,7 +9,7 @@ html, body{
     color: #424242;
     font-family:'Helvetica Neue', Helvetica, sans-serif;
     font-weight: 400;
-    background: #4E4E4E;
+    background: #000000;
     overflow: hidden;
 }