CSS :is() :where() the Magic Happens

For Blogtober, I dug up a draft about the two CSS pseudo-class functions :is() and :where() that I’d had lying around in my drafts folder for quite some time. Actually, when I originally started writing this post, :is() and :where() had just landed in CSS, and — just like with so many other new CSS features — I was expecting them to “change the way we write CSS.” Both are now widely available baseline features supported by all modern browsers.

Source: CSS :is() :where() the Magic Happens · Matthias Ott