Mask app on restart and shutdown

couchpotato/static/style/main.css

@@ -112,8 +112,9 @@ form {
 	margin:0;
 }
 
-.spinner{
-	background: #4e5969 url('../images/spinner.gif') no-repeat center;
+body > .spinner, .mask{
+	background: rgba(0,0,0, 0.9);
+	z-index: 100;
 }
 
 .button {
@@ -380,11 +381,6 @@ form {
 	);
 }
 
-.mask {
-	background: rgba(0,0,0, 0.7);
-	z-index: 100;
-}
-
 .question {
 	display: block;
 	width: 600px;