I've wanted :has for 16 years: https://bugzilla.mozilla.org/show_bug.cgi?id=418039 https://bugzilla.mozilla.org/show_bug.cgi?id=418039 I'm glad it's now availa

I've wanted :has for 16 years: https://bugzilla.mozilla.org/show_bug.cgi?id=418039 https://bugzilla.mozilla.org/show_bug.cgi?id=418039 I'm glad it's now available, and enabling all sorts of fun things.