I'm using it but it's such a pain in the arse to find anything else online about it.

It's one of the reasons I'm planning on moving stuff over to Pico.

Or now, I guess, just writing some CSS from scratch, which I hate.

Yes it is a pain. But the whole thing is like two pages, so I^H my LLM just reads it. I used to read it. It was ok readable (and I'm not very good at CSS).