Lots of a11y from from @simevidas in this week's news, from the nuances of using :focus-visible and input placeholders, to accessible typefaces and a Safari bug with :display: contents. Plus, a bare-bones snippet for web component style encapsulation.
https://css-tricks.com/platform-news-using-focus-visible-bbcs-new-typeface-declarative-shadow-doms-a11y-and-placeholders/