Video Background on mobile site gone after style-change

Hi community,

I'm using the Burke Template from the Brine family and have a fullscreen video background on my landing page. It works on computers and it used to work on mobile phones as well. Today I changed two small things in the site-stlye: 1. I changed the color of the mobile bar, 2. I activated ajax loading.

After these changes were saved, I reloaded the mobile page and the video background was gone. I suspected ajax loading to be the reason so I deactivated it again, but the video background still doesn't show anymore.

Any hints on this?

Thanks, Leander