Youtube full-screen?

[Offerel]

If I read a article with a embedded YouTube video, I see a button to view the video in full screen. But if I click the full screen button, the function doesn't work.

Is there any way to display a embedded YouTube video in full screen or at least make it bigger?

[Offerel]

The problem was with my nginx config. With the following parameters for permissions-policy/fullscreen it works:

add_header Permissions-Policy "fullscreen=(self 'https://www.youtube.com')";