https://developers.cloudflare.com/cloudflare-one/traffic-policies/egress-policies/host-selectors/
Host selectors ยท Cloudflare One docs
Jul 9, 2026 - Configure Host selectors in Gateway.
host selectorscloudflare onedocs
https://bugzilla.mozilla.org/show_bug.cgi?id=1855753
1855753 - WPT failure in css/selectors/invalidation/host-pseudo-class-in-has.html
RESOLVED (nobody) in Core - CSS Parsing and Computation. Last updated 2023-09-28.
css selectors