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.
var
as shorthand to reset all custom properties.
default
, introduce unset
as “initial-or-inherit”
all
shorthand does not reset direction
, unicode-bidi
, or var-*
.