CSS WG Blog CSS Box Sizing Level 4 First Public Workin…

CSS Box Sizing Level 4 First Public Working Draft

The CSS Working Group has published a First Public Working Draft of CSS Box Sizing Module Level 4. This module defines the sizing properties (width/height/etc.) and their keywords, a long with related sizing terminology and concepts.

The module is currently drafted as a delta spec over CSS Sizing Level 3. (We will merge in the L3 prose once it reaches CR.) Additions since Level 3 include:

• stretch, contain, and fit-content keywords for the sizing properties, which were deferred from Level 3.
• the new aspect-ratio property
• the new contain-intrinsic-size property

Please send feedback by either filing an issue in GitHub (preferable) or sending mail to the (archived) public mailing list www-style@w3.org with the spec code ([css-sizing-4]) 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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• Native Aspect Ratio Boxes in CSS thanks to `aspect-ratio` – Bram.us 2020-11-29 23:13:20 […] in May 2020 I was very delighted to read that the first Working Draft of the CSS Box Sizing Module Level 4 got published, as it featured an […]