Re: [csswg-drafts] [css-animations] Clarify properties that are not allowed in @keyframes rule (#2736)

I think we still need to clarify whether non-animatable properties are exposed in the CSSOM. Specifically, from an above comment:

> >  The `<declaration-list>` inside of `<keyframe-block>` accepts any CSS property except those defined in this specification, but does accept the animation-timing-function property and interprets it specially.
> 
> I'm not sure what "accepts" means here (are such properties ignored silently? Do they generate errors? Are they available in the CSSOM?). However, I suspect we want to do what Gecko does here and parse such properties, expose them in the CSSOM, but simply not animate them. i.e. this is Issue 1 from the spec:
> 
> > This specification needs to define how the value is determined from the keyframes, like the section on Application of transitions does for CSS Transitions.

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Received on Wednesday, 28 August 2019 23:25:44 UTC