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.
Resolved: CSS2.1 Issue 27 proposal accepted to clarify interaction of scrollbars with width and height calculations.
Resolved: CSS2.1 Issue 33 proposal accepted to make intrinsic percentage widths consistent with specified percentage widths.
Discussed CSS2.1 Issue 31 about exactly when misplaced @import rules are ignored, next need proposed text.