I have a similar issue, but have not been able to apply this solution to my pages. There are too many block IDs, I don't know which one to specify in the code. On each of these two pages in mobile view (https://www.braveryonfire.com/watch) and (https://www.braveryonfire.com/donate), I would like the image that currently displays on top of the lower block to load below it - so on the "watch" page the "save the date" image displays on top of the ribbon image, and on the "donate" page the "donate" embed block displays on top of the ribbon image. (The site is built using 7.1.)
Thanks in advance for any assistance!