Antoine Quint

First, let me explain why we made this proposal. We felt it was important that known values, those from the `AnimationFrameRatePreset` enum, could be used to communicate simple intents such...

[Web Animations 2](https://drafts.csswg.org/web-animations-2/) introduces the notion of [group effects](https://drafts.csswg.org/web-animations-2/#grouping-and-synchronization). This would allow a single animation to group multiple effects, and thus the `frameRate` set on the animation would apply to...

I think there are two topics being discussed here. The first topic is the notion of an animation being comprised of multiple sub-animations. As of this writing, the proposed solution...

@chrishtr when you say: > How should the developer indicate that they'd like animations to be synced if possible? What is the thing you'd like the animations to be synced...

First, I think it's important to consider that we're not suggesting the deprecation of `requestAnimationFrame()`. That function is part of the Web platform and here to stay. This proposal is...

I'm not sure I can fully answer this question, because I certainly don't know of all the uses for `requestAnimationFrame()`. But I believe that "virtual DOM" JS libraries rely on...

You should look at existing animation tests for `font-synthesis` and make sure there is similar coverage for the longhand properties. One place to look at is `web-platform-tests/web-animations/animation-model/animation-types/property-list.js` where there is...

Cc @josepharhar who seems to have done the bulk of the work for [`display` animation in Chrome](https://issues.chromium.org/issues/40249059) and @flackr who has reviewed it.

If I [modify the test to apply to a non-pseudo element](https://codepen.io/graouts/pen/MWRpqOO), Chrome and WebKit agree on the results and the `to` animation keyframe values are reflected in the computed style...

I landed a new tentative WPT test for this in https://github.com/web-platform-tests/wpt/pull/45274 and made it pass in WebKit in https://github.com/WebKit/WebKit/pull/26312. Happy to revisit this if this is warranted, but I think...