Honestly liking the fact that because this place openly allows (some) CSS edits to post, people are trial-and-error-ing CSS and learning the basics that way.
Kind of reminds me of the old days how a bunch of us (ourselves included) learned basic HTML, CSS, and JS by just cracking open the source on webpages and trying it for ourselves.
This sort of live learning by doing as an optional "side quest" of a given platform is the kind of stuff we love and wish we could see more of.