Compound Background Elements
Compound background elements are used to display images behind the rest of the template elements and to play audio in the background of a client-server app page.
audio element is used to play background audio for a document when the document is the top-most document in the navigation stack. Each document page that plays audio in the background must have its own
audio element. If the same URL is used between pages, audio will continue to play when the new page is displayed. The
audio element only supports unencrypted audio.
audio can contain the following elements:
audio can be a subelement of:
background element is used to display an image or audio in the background of a channel app page.
background can contain the following elements:
background can be a subelement of:
<img src="" />
<asset id="" src="" keyDelivery="" />