Full width media contents nor working on full width template

Hi
I’m using Nirvana theme and when using media (photos or emdeb contents as video or goolgle maps) in full width pages it doesn’t gett full.
The template seems to assume full width for the text but not for the media and even in the worpdress panel it doesnt let me edit for larger size then the normal one.

I would apreciate any help to understand how can i do this?

Thank you
🙂