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.
text-size-adjustproposal submitted last week to an official Editor’s Draft.
border-image, disallow CSS2.1 border properties) accepted for
box-shadowallowed but not required.
min-heightwith “For example, margin collapsing is not affected because it is based on computed values and not used values.” or similar.