Comment by stankot
That is weird, because it is HTML/CSS only. Do you see anything that would help me debug it? Could it be that an add-on (content blocker) messes up with it? I don't have an android device to test. I don't see any issues on desktop and ios though.
Quite amusingly:
site glitch doesn't work on the desktop FF too, not in any of three, with various staleness but nothing too old
works on the CodePen, but if I replace CSS there with the response of glitch.css from the Network tab - it blanks and never shows anything
no ad-blockers, no errors while loading