Re: [csswg-drafts] [css-animations-2] Add the `animation-end-delay` property (#13863)

The CSS Working Group just discussed ``[css-animations-2] Add the `animation-end-delay` property``, and agreed to the following:

* `RESOLVED: Introduce animation-delay-start and animation-delay-end as longhands of animation-delay, making the animation-delay-end value optional and defaulting to zero (not duplicating start)`

<details><summary>The full IRC log of that discussion</summary>
&lt;fantasai> ydaniv: This is about exposing the end delay to the declarative syntax<br>
&lt;fantasai> ydaniv: It's already a property that we have on the imperative API<br>
&lt;fantasai> ydaniv: Proposal is to have animation-delay become a shorthand of animation-delay-start and animation-delay-end<br>
&lt;bramus> q+<br>
&lt;fantasai> ydaniv: both are time values, defualt to zero<br>
&lt;fantasai> ydaniv: and the end delay is optional<br>
&lt;fantasai> fantasai: And it defaults to zero, not matching the start value<br>
&lt;astearns> ack bramus<br>
&lt;bramus> q-<br>
&lt;fantasai> bramus: That was going to be my question :)<br>
&lt;fantasai> astearns: Proposed to accept the proposal, and clarify that animation-delay-end defaults to zero.<br>
&lt;fantasai> PROPOSED: Introduce animation-delay-start and animation-delay-end as longhands of animation-delay, making the animation-delay-end value optional and defaulting to zero (not duplicating start)<br>
&lt;fantasai> RESOLVED: Introduce animation-delay-start and animation-delay-end as longhands of animation-delay, making the animation-delay-end value optional and defaulting to zero (not duplicating start)<br>
</details>


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Received on Wednesday, 13 May 2026 15:57:19 UTC