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.
cx
, cy
, dx
, dy
, fx
, fy
, height
, width
, offset
, r
, rx
, ry
, x
, x1
, x2
, y
, y1
, y2
and maybe d