Oh man, I'm sorry I didn't realize that you'd replied to this! Thank you. I am still trying to figure out this issue. What I really need is a piece of code that I can use to align specific individual section background images differently from each other, on any page of the site.
The page that shows this issue the most is backcountrypilates.com/services . I'm happy with everything on desktop, but on mobile the first photo needs to show primarily the left side of the photo, the second one is fine, and the third one down the page needs to show a little more of the right side. Unfortunately, a "one alignment fits all" option is not really working for me.