i've been experimenting with it on safari tech preview, and it really lets you do many things that were previously impossible or unacceptably brittle. i love it.
same with container queries. have been experimenting, it's really nice compared to page grids and breakpoint hell.
Ohhh, I didn't know that container queries are finally being implemented. I'd given up on them as something that would be great but didn't look like they were going to happen.
> this feels like a major footgun that will promote brittle DOM specific CSS
I can’t say I’ve really considered this in any depth, but my very first thought when I saw :has() was “finally, I can fix those last stupid bugs in my HN userstyle.”