Alignment of Header and Top Section Keeps Readjusting Itself

Hey all, I’m having an issue with alignment in the Wix editor.

I keep finding a very small amount of background bleed between my Header and the top section of all my pages (as in they’re not snapping together cleanly), where a few pixels of the background separate those two sections. It’s very noticeable because the top section of my pages are animated GIFs.

Even after readjusting it and checking in preview mode to confirm the bleed is gone, when I open my site in the editor later, the sections have become unaligned again, and the bleed is back.

Has anyone else encountered this? Thanks.