I just upgraded https://centralcoastbusinessalliance.com to the J4 version of Ariana. Lots of issues but I have them all fixed except for the section titled:
Powerful Marketing
marketing your business.

I tested this update here first: http://pritchardhosting.com/ccba and thought I had all the problems worked out before working on the live site.
On my test site there is no background image showing on mobile. But on the live site: https://centralcoastbusinessalliance.com you can still see a small slice of the background above that section. See the attached.

Can you tell me how to fix that?
Thanks much.