Force fullwidth area content

Hello. Is there a way to change the 980px content area to fullwith? I’ve been using the Divi Builder, but it worked kinda bad. Now I’m using the BeaverBuilder and it works perfect except for the fullwidth modules (same problem with the Divi Builder). I downloaded a force fullwidth plugin, and it works, but also disables the nice parallax effect of the theme.

If there would be a way a force fullwidth for the content area without sacrificing the parallax effect it would be amazing. Thanks.