BEM. Like seemingly all techniques in the world of front-end development, writing CSS in a BEM format can be polarizing. But it is – at least in my Twitter bubble – one of the better-liked CSS methodologies.
Personally, I think …
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