Hi Niven,
Thanks so much, now I got mine working as well! 
What I’ve discovered are:
-
when the image is too big (data-wise), the moving animation won’t work for some reason.
-
when I copy-paste my working example into a newly created Bubble app, only the moving animation won’t work while any other things work. (So unfortunately I am not able to show you what I’ve achieved. Checked many times that it was exactly the same, but still didn’t work. Re-built the exact same things on the newly created app, still wouldn’t work.)
Edit: Posted a video of my achievement on Twitter https://twitter.com/Junichi_FTanaka/status/1340411782746267651?s=20
- Bubble’s CSS can’t seem to affect any other element than its own.
-
For example, the following works because it (“glow”)'s trying to affect its own element (“glow”) only —
.glow:hover {
transform: translateX(-220px);
}
-
But this one doesn’t work, because it (“glow”) is trying to affect another element (“lorem”) —
.glow:hover {
.lorem {
font-size: 36px;
}
}
Anyway thanks again for your kind help! 