tl;dr for those who didn't read the actual article: They are changing to x h1 { warning: semantically questionable } from /* where x is :is(article,

tl;dr for those who didn't read the actual article: They are changing to x h1 { warning: semantically questionable } from /* where x is :is(article, aside, nav, section) */ x h1 { font-size: h2 } x x h1 { font-size: h3 } x x x h1 { font-size: h4 } which was removed from spec in 2022 So anyone who doesn't place H1s where they shouldn't have been anyways is fine