CSS WG Blog CSS Publication Updates August 2012

CSS Publication Updates August 2012

The CSS Working Group has published updated Working Drafts of the following CSS modules: Fonts Level 3, Regions, Fragmentation Level 3, Selectors Level 4. Additionally, Values and Units Level 3 has been published as a Candidate Recommendation. (The Flexible Box Layout Module was approved by the CSSWG earlier, but is still waiting for the W3C Director’s approval.)

CSS Fonts Module Level 3 updated Working Draft

Fonts Level 3 covers CSS3 features relating to font selection and feature controls.
Changes since the last Working Draft are listed in the Changes section.

CSS Regions Module updated Working Draft

Regions adds the ability to combine disparate elements into a single flow and to direct that flow through multiple boxes, and defines a processing model for laying out such chained boxes. Changes since the last Working Draft primarily affect the object model for regions, and are listed in the Changes section.

CSS Fragmentation Module Level 3 updated Working Draft

Fragmentation Level 3 defines how content is broken across multiple “fragmentation containers”, e.g. pages or columns. It also defines some properties to control where such breaks occur. Changes since the last Working Draft are listed in the Changes section and include the addition of recto and verso values for page-breaking. This is expected to be the last Working Draft before Last Call.

Selectors Level 4 updated Working Draft

Selectors Level 4 defines patterns that match against elements in a tree, and are used to select elements in CSS style rules and the DOM’s querySelector and related APIs. Changes from the previous draft include the addition of a scoped selector section, wildcard matching and language lists in the :lang() pseudo-class, new drag and drop pseudo-classes, a new :user-error pseudo-class, a syntax change to the subject indicator, and a switch from a :column() pseudo-class to a column combinator. Feedback is requested, particularly on the changes.

CSS Values and Units Module Level 3 Candidate Recommendation

Values and Units Level 3 covers new units like rem (like em, but always relative to the root element’s font size) and vh (percent of viewport height) as well as the calc(), toggle(), and attr() functional notations. W3C encourages implementations of this module, and welcomes feedback resulting from such implementation. Changes since the Last Call Working Draft are listed in the Changes section.

As always, please send feedback to the (archived) public mailing list www-style@w3.org with the appropriate spec code ([css3-fonts], [css3-regions], [css3-break], [selectors4], or [css3-values]) and your comment topic in the subject line. (Alternatively, you can email one of the editors and ask them to forward your comment.)

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