- From: Josh Tumath via GitHub <sysbot+gh@w3.org>
- Date: Fri, 24 Jan 2025 17:25:05 +0000
- To: public-css-archive@w3.org
> I discussed this issue with an author today. The feedback was that she and her team work in `px`, want to continue to work in `px` and, importantly, want to obey the user's system font preferences without spending years tediously converting their existing sites to use a new unit. Authors will always be free to do that, but it's worth pointing out that that goes against [WCAG 2.2's resize text success criterion.](https://www.w3.org/TR/WCAG22/#resize-text) > If we ship `uem` as described, I believe it is not possible in CSS to derive a `%` value that can be passed to `text-size-adjust`. We'd be leaving these authors, and subsequently their users, out in the cold. Out of curiosity, how would you derive a percentage from an `env(system-font-scale)` for the system font size. Presumably, it would still compute to an absolute length? Or is this a different `env` property to what we've already discussed that provides the scaling percentage? Plus, my understanding of text-size-adjust is that the UA will only do the adjustment in certain circumstances, like when there's no `<meta viewport>` tag. I didn't see it working in Chrome for Android on this CodePen. I don't know if I'm missing something? https://codepen.io/joshtumath/pen/mybQmqW -- GitHub Notification of comment by JoshTumath Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/10674#issuecomment-2613039820 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Friday, 24 January 2025 17:25:05 UTC