CSS :is() and :where() are coming to browsers
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.
- This is something that CSS preprocessors are good at (via nesting). Another nice little example of community-built tech pushing forward and native tech coming up later to help once the idea is fleshed out.
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