This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, the Future of CSS syndicator, and the issue list on Github.
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.
Posting on behalf of L. David Baron:
CSS Conditional Rules Level 3 has been published as the first public working draft of the CSS Conditional Rules Module. To quote from its introduction:
CSS 2.1 defines one type of conditional group rule, the
@mediarule, and allows only rulesets (not other @-rules) inside of it. The@mediarule provides the ability to have media-specific style rules, which is also provided by style sheet linking features such as@importand<link>. The restrictions on the contents of@mediarules made them less useful; they have forced authors using CSS features involving media-specific style sheets to use separate style sheets for each medium.This specification extends the rules for the contents of conditional group rules to allow other @-rules, which enables authors to combine CSS features involving @-rules with media specific style sheets within a single style sheet.
This specification also defines additional types of conditional group rules,
@supportsand@document, to address author and user requirements.The
@supportsrule allows CSS to be conditioned on implementation support for CSS properties and values. This rule makes it much easier for authors to use new CSS features and provide good fallback for implementations that do not support those features. This is particularly important for CSS features that provide new layout mechanisms, and for other cases where a set of related styles needs to be conditioned on propertysupport.The
@documentrule allows CSS to be conditioned on the page to which the style sheet is being applied. This allows users to apply styles to a particular page or group of pages, which greatly increases the power of user style sheets.
The CSS working group welcomes comments on this specification. The preferred place for them is the www-style mailing list. Please start the subject line of your message with the spec code[css3-conditional] and include a summary of your comment.
-David
flow-from property to enable regions, mark interaction wit content and display as an issue.The Cascading Style Sheets (CSS) Working Group has published a Last Call Working Draft of the CSS Speech Module. The CSS Speech module defines aural CSS properties that enable authors to declaratively control the rendering of documents via speech synthesis. The feature set exposed by this specification is designed to complement the model described by the Speech Synthesis Markup Language (SSML) Version 1.1.
Comments are welcome through 30 September 2011. As always, send feedback to www-style with the spec code [css3-speech] and your comment topic in the subject line.
On 12 July 2011 Anne van Kesteren pushed out a First Public Working Draft of the CSS Object Model [cssom] specification. The primary goal of the spec is to standardize various un(der)specified-but-implemented APIs for interacting with CSS style sheets and drive the Web platform towards interoperability in this area.
A second goal for the CSSOM effort is to provide better APIs for interacting with style sheets. To that end, Daniel Glazman has put out a call for suggestions to find out what problems the CSSOM APIs most need to solve.
Anne also published an update to the CSSOM View Module [cssom-view]. The main thing holding this module back is the lack of feedback, particularly from implementers, so please send comments!
As always, send feedback to www-style with the appropriate [spec-code] and your comment topic in the subject line.
Going backwards in time as I try to catch up…
[css3-image]On 12 July 2011, the CSSWG published an updated Working Draft of the CSS Image Values and Replaced Content Module Level 3. Among other significant changes, this publication switches the linear-gradient() angles to bearing angles (compass directions) with 0deg pointing up due to overwhelming feedback that this made more sense.
Next up, Tab is planning to change the syntax for keywords to make them less confusable. If you have good suggestions, send them over to www-style.
[css3-regions]On 9 June 2011, the CSSWG published aa First Public Working Draft of the CSS Regions Module. This module defines linked flows between different regions (boxes) on the page. CSS Regions is still in the early stages, so expect lots of changes as we figure out the right way to do things. You can check out the latest in the unofficial editor’s draft.
[css3-writing-modes]On 31 May 2011, we also published an updated Working Draft of the CSS Writing Modes Module Level 3. Most of the changes were detail-oriented as we dive into the ambiguous nitty-gritty of how to typeset vertical text.
As always, send feedback to www-style with the appropriate [spec-code] and your comment topic in the subject line.
to <keyword> syntax for gradients.repeat-* functions).flow-from syntax for CSS Regions and which property it belongs in.We worked through the items on the CSSWG’s HTML5 LC review wiki page.
:ltr and :rtl. See also switching to :dir().::cue et al.disabled attribute in <link> is not a CSSWG comment.video { object-fit: contain; }.font-size: xxx-large is not a CSSWG comment to HTML<details> markup.<details> usable, see e.g. visual collapsing and markers.<iframe seamless> definition has some problems that need fixing.<iframe seamless>Browse by date:
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