Dear Ygit,

While creating example to point it out, I figured out how to fix that particural case.
Having Special Heading below that problematic image, it was enough to change its top-margin from default to 0px, and this somehow fixed unwanted 50px gap on desktop, but its position on mobile remains correct.

So becasue I’ve found some posts with similar cases, I can leave here a hint – give it a try and reset margin of element below that problematic one. It worked for me

My problem is solved, thank you Yigit for inspiration.