Isn't :heading literally not supported anywhere?
this post was submitted on 16 Feb 2026
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Well spotted, the article states:
The :heading pseudo-class is currently available in nightly builds only. You can test it now in:
- Firefox Nightly (behind a flag)
- Safari Technology Preview
Yeah it's pretty weird.
I'm getting the impression this sub is getting spammed with Google-promoting or nothing-burger posts these last few weeks.
Do you mean features only currently available in Chrome?
Same difference. GoogleCSS, if you'd want to be brief.
However in this case the opposite is true, as Chromium currently doesn't support this feature.