The CSS Working Group At TPAC: What’s New In CSS?

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Last week, I attended W3C TPAC as well as the CSS Working Group meeting there. Various changes were made to specifications, and discussions had which I feel are of interest to web designers and developers. In this article, I’ll explain a little bit about what happens at TPAC, and show some examples and demos of the things we discussed at TPAC for CSS in particular.

This article describes proposals for the future of CSS, some of which are really interesting. It includes mention of:

  • CSS scrollbars – defining the look and feel of scrollbars. If that sounds familiar, it’s because it’s not actually new: Internet Explorer 5.5 (and contemporaneous version of Opera) supported a proprietary CSS extension that did the same thing back in 2000!
  • Aspect ratio units – this long-needed feature would make it possible to e.g. state that a box is square (or 4:3, or whatever), which has huge value for CSS grid layouts: I’m excited by this one.
  • :where() – although I’ll be steering clear until they decide whether the related :matches() becomes :is(), I can see a million uses for this (and its widespread existence would dramatically reduce the amount that I feel the need to use a preprocessor!).

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