Full width element

Hi there,

I have a question that might be beyond the scope of this forum, but I’ll ask anyways.

I want to create a signup with the 1210px width (or any other set in css) with a full browser width color background. I generally know how to do it, but in case of this theme, I’m not sure..
I wanted to use the Advanced Builder and put the sign up code in there (sets it to 1210 or my css width) but I want to get the fullwidth background for it…

I’ve tried adding the sign up to the Advanced Slide builder and it kind of worked because it was easy to set the background color for this as it will go full screen, but the signup would move with the browser, never centered, like the rest of the content below. So, I ditched this idea..

How to make the element (signup in my case) stay within the website dimensions 91210px in my case) but put a full-width screen background underneath it…

What would you suggest and thank you in advance!