Make Rich/Floating Interstitial scrollable

In some cases, you may want to send more text in the Rich/Floating interstitial and therefore make use of the scrolling function. To do that you need to use CSS in the message content.

Procedure:

1. In the Message field, add the following CSS before the text:

   <style> #message-wrapper{ height:50%; overflow:scroll; } </style>

2. The message section will become scrollable: