The CSS Working Group invites implementations of CSS Display Module Level 3 Candidate Recommendation. This module describes how the CSS formatting box tree is generated from the document element tree and defines the ‘display’ property that controls it.

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.

Original source: https://www.w3.org/blog/news/archives/7265