This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, the Future of CSS syndicator, and the issue list on Github.
Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
We worked through the items on the CSSWG’s HTML5 LC review wiki page.
:ltr and :rtl. See also switching to :dir().::cue et al.disabled attribute in <link> is not a CSSWG comment.video { object-fit: contain; }.font-size: xxx-large is not a CSSWG comment to HTML<details> markup.<details> usable, see e.g. visual collapsing and markers.<iframe seamless> definition has some problems that need fixing.<iframe seamless>