White | grey overlay on several columns. How to get rid?

[pietergmr]

Hi,

I am using Elementor and I have on several sections these white / or grey overlays
I tried every possible setting to get rid of that but I am unable to manage that.

Can someone tell me how to get rid of that? I attached a screenshot
(The white is shown across multiple sections, and here you can see it clearly on the blue background)

Thanks!