Axiomatic CSS and Lobotomized Owls · An A List Apart Article

Using :has() as a CSS Parent Selector and much more | WebKit

A terrific tour of just some of the fantastic ways you can use :has() in CSS.

The section on using it with sibling selectors blew my mind:

How often have you wanted to adjust the margins on a headline based on the element following it? Now it’s easy. This code allows us to select any h2 with a p immediately after it.

h2:has(+ p) { margin-bottom: 0; }

Amazing.

Fading out siblings on hover in CSS | Trys Mudford

Well, the clever CSS techniques just keep on comin’ from Trys—I’m learning so much from him!

[selectors] Functional pseudo-class like :matches() with 0 specificity · Issue #1170 · w3c/csswg-drafts

A really interesting proposal from Lea that would allow CSS authors to make full use of selectors but without increasing specificity. Great thoughts in the comments too.