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.
overflow:autoare sized as if scrollbar is *not* present (even if they are).
overflow: overlayvalue. No consensus to add it; see minutes for considerations.
non-asciistarts at 0x80.
@pageselectors to be comma-separated lists