Fullwidth on plugin generated page

Hey guys,

first of all congrats to that awesome theme – I’m really enjoying working with! Usually I get the answers to my question by searching this board. However, this time I couldn’t find any hint…

I’m using an external plugin (tribe events calendar), which generates dynamic content pages I cannot edit in backend. To keep continuous styling throughout all pages, I want to add a fullwidth header to those pages. I found the related plugin files and inserted the image link, which works fine. However, I don’t manage to get the image fullwidth (I guess due to container settings). Could you please help?

Thx and best regards!
Marc