- From: Joey Arhar via GitHub <noreply@w3.org>
- Date: Thu, 22 Jan 2026 15:48:35 +0000
- To: public-css-archive@w3.org
> As far as detecting support, one approach we could take is adding a new [named feature](https://drafts.csswg.org/css-conditional-5/#support-definition-named-features) to the @supports named-feature() function for detecting support for the new behavior. Thanks, that sounds great! > is it that elements transitioning to display:none stay in the top layer during the transition if they were in the top layer at the start of it? Yes, although I don't know how to detect whether there is a transition active which will end in display:none, so what I've implemented is for the element to stay in the top layer until it is display:none. > but we'd presumably need to come up with a keyword for that behavior, and make an appropriate tradeoff between being concise and being descriptive. How about `@supports named-feature(TopLayerExitAnimations)`? -- GitHub Notification of comment by josepharhar Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13200#issuecomment-3785138711 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Thursday, 22 January 2026 15:48:36 UTC