diff --git a/frontend/ng-karaoqueue/src/index.html b/frontend/ng-karaoqueue/src/index.html
index 6ab23f9..6390e4c 100644
--- a/frontend/ng-karaoqueue/src/index.html
+++ b/frontend/ng-karaoqueue/src/index.html
@@ -9,7 +9,7 @@
   <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500&display=swap" rel="stylesheet">
   <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
 </head>
-<body class="mat-typography">
+<body class="mat-typography mat-app-background">
   <app-root></app-root>
 </body>
 </html>
