I created a custom receiver for my Chromecast app to receive media. However, I want to add a background picture, watermark, logo etc before the media I am casting is loaded. That functionality is currently available in the Styled Media Receiver and according to this Google site (<https://developers.google.com/cast/docs/styled_receiver>) I can do that in the css field with .background and .logo etc.But I try to add that into my css portion of the custom receiver, nothing shows up, just skips to the media I am trying to stream from Sender app. What am I doing wrong? Can I not put those classes? I am already importing the following scripts:

```
<script type="text/javascript" src="//www.gstatic.com/cast/sdk/libs/receiver/2.0.0/cast_receiver.js"></script>
<script type="text/javascript" src="//www.gstatic.com/cast/sdk/libs/mediaplayer/0.7.0/media_player.js"></script>

```