(Languages: de en ru uk)

CSS current work & how to participate

CSS spec­i­fi­ca­tions

This page contains a list of all completed specifications and drafts by the CSS WG (formerly “CSS & FP WG”). If you want to follow the development of CSS3, this is the place to start. You have ideas? Contributions? See “If you want to help” on this page.

Ta­ble of spec­i­fi­ca­tions

See also: Jens Meiert's index of properties.

Com­pleted work Sta­tus
CSS Level 2 REC
CSS Level 1 REC
Selectors PR
CSS Color PR
High Pri­or­ity Sta­tus Up­com­ing
CSS Level 2 Revision 1 LC PR
CSS Namespaces CR PR
CSS Backgrounds and Borders CR PR
CSS Multi-column Layout CR PR
Media Queries CR PR
Medium Pri­or­ity Sta­tus Up­com­ing
CSS Snapshot 2007 LC CR
CSS Snapshot 2010 WD WD
CSS Mobile Profile 2.0 CR PR
CSS Marquee CR PR
CSS Paged Media LC CR
LC CR
CSS Values and Units WD WD
CSS Cascading and Inheritance WD WD
CSS Text WD WD
CSS Writing Modes WD WD
CSS Line Grid WD
CSS Ruby CR WD
CSS Generated Content for Paged Media WD WD
CSS Fonts WD LC
CSS Basic Box Model WD WD
CSS Template Layout WD WD
CSS Speech WD WD
CSS Basic User Interface CR PR
CSS Scoping WD
CSS Grid Positioning WD WD
CSS Flexible Box Layout WD WD
CSS Image Values WD WD
CSS 2D Transformations WD WD
CSS 3D Transformations WD WD
CSS Transitions WD WD
CSS Animations WD WD
CSS style Attribute Syntax CR PR
Low Pri­or­ity Sta­tus Up­com­ing
CSSOM View WD WD
CSS Extended Box Model WD
CSS Object Model WD
CSS Syntax WD WD
CSS Lists WD WD
CSS Tables WD
CSS Reader Media Type WD -
CSS Positioning WD
CSS Generated and Replaced Content WD WD
CSS Line Layout WD WD
WD WD
CSS Math WD
CSS Presentation Levels WD WD
CSS Aural Style Sheets WD
CSS TV Profile 1.0 CR PR
Behavioral Extensions to CSS WD WD
CSS Introduction WD WD

What's new?

(Also available as
    Atom news feed.)

Ex­pla­na­tion of col­ors & sta­tus codes

W3C indicates the stability of specifications by a status code. The CSS working group uses the following, from least to most stable:

Ab­bre­vi­a­tion Full name
WD Working Draft
LC Last Call
CR Candidate Recommendation
PR Proposed Recommendation
REC Recommendation

The names are defined in sections 7.3 and 7.4 of the W3C process document. A REC is what is normally referred to as a “standard.” W3C encourages everyday use starting from CR.

If you want to help

Everybody can take part in the discussions on the archived mailing list [email protected]. You can subscribe yourself. This is the preferred place for discussions, since the members of the working group will see them. Please don't use this list for questions of the type How do I… Use comp. infosystems. www. authoring. stylesheets ("ciwas") or see “Learning CSS”.

If you work for a W3C member organization, you can also join the CSS working group and see drafts before they are published. To participate you need to commit to (on average) 1 day per week. Contact me or your organization's W3C contact person. The group's minutes are public and posted on the CSS WG blog.

A specification is not a manual. There is no excuse for badly written drafts and please complain if you find one. But specs do target a specific audience. See Elika Etemad's Understanding the CSS Specifications.. J. David Eisenberg has written another useful How to read W3C specs.

About the test suites

The CSS working group intends to spend a lot of time on developing the CSS test suites along with the CSS specifications. By providing a test suite for each module as soon as the module is published, we hope not only that CSS3 implementations will conform to the specification much earlier, but also that people will have an easier time understanding the formal text of the spec.

The test suites have their own archived mailing list [email protected]. Please send error reports, test case submissions, and any other questions and comments about the CSS test suites there. Elika Etemad maintains the CSS Testing Wiki with more info for contributors.

Mark-up con­ven­tions

The source mark-up of the specifications follows certain conventions (which is useful for automatic processing).

Bert Bos, style activity leadCopyright © 1994-2010 W3C®

Last updated 26 February 2011