Is CSS3 an official standard?

Question

I would like to know if CSS3 is an official W3C standard or just something like \"CR\" (Candidate Recommendation)?

Answer 1

No, CSS3 is a collective name for a W3C activity of developing CSS. W3C isn’t really a standards body at all; it issues recommendations, and only a few of the areas of CSS3 activity have resulted in recommendations so far. Most of the areas have produced working drafts, which carry the following boilerplate text: “This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.”