VodChat live: Video/Chat does not fill full width (Chrome/Edge)

[R_N_G_sus]

If I'm watching live on https://vodchat.cohhilition.com/live not in fullscreen mode,
the video isn't as big as it could be - The body has margins on the sides.

So I added a one-liner CSS with the extension Stylus

body#live {
max-width: none !important;
}

and now it fills the window.

I don't know if that is a bug, expected behavior or if it even happens to others - but maybe it helps someone