maximize a browser source - webcam video automatically

[Spanisch24]

I got several scenes where I want to show areas of Majorca where I live, so I show webcams like
this one: Alaró (this is how I want it to appear)
or that one: Paguera (this happens with most webcams)
and many more... but I want just the full screen cam view, not anything around it.

Whenever I want to show/stream any of these webcams,

1. I have to right-click on the source
2. choose "interact" to maximize the video
3. click on the corresponding maximize button and it's ok

But when I start the next OBS session I have to do all these steps again and again.

*Is there a way to maximize the video automatically?
Maybe in the "properties"-box under "Custom CSS"?

Thank you very much.