DwainsDashboard - Automatic builded area dashboard for desktop-tablet-mobile

I have some cameras in the WebRTC integration. They work fine when I create a page in the more_page folder for each camera and put it in a room.

But I also want a page with all cameras showing. But they show up vertically. I then tried to put them into a grid but it doesnt work. No errors but none of the camera windows show up. Anybody know why?My code: