Inspiro homepage widgets.... how to get a two column section full width?

Hi
Have inspiro premium… am trying to set up homepage (widgetised) and am trying to reproduce part what i have on another site running inspiro lite…

On one already made template page there is an “about section… two columns… text on left and image on right… sitting on a grey background”… running full width

I’ve played but failed in widgets such as “single page” and “html”
In the single page I get the layout but its too narrow.
In the html its a bit wider…but I dont know how to add grey bg full width

Is there a way, anyone knows?
cheers