Šime Vidas with the lowdown on what these pseudo-selectors are and why they will be useful:
:is() is to reduce repetition¹ of parts of comma-separated selectors. :where() is the same, but nothing inside it affects specificity. The example of wrapping :where(:not()) is really great, as now there is a way to use :not() without bumping up the selector weight in a way you very likely don’t want.此内容由惯性聚合(RSS阅读器)自动聚合整理，仅供阅读参考。 原文来自 — 版权归原作者所有。