css-animations: Does animation-duration support calc()?

[praveenpuglia]

https://drafts.csswg.org/css-animations/#animation-duration

From the spec, it's not clear whether calc() function can be used for animation duration or not. At the moment, I see Chrome supporting it but firefox doesn't.

This clearly has advantage in conjunction with CSS custom properties. Here's one such example.
https://codepen.io/praveenpuglia/pen/RVWKew/

[Loirooriol]

From CSS values,

The calc() expression represents the result of the mathematical calculation it contains, using standard operator precedence rules. It can be used wherever <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> values are allowed.

[praveenpuglia]

That means that I have to see if a bug already exists in Firefox and if not, raise one.

[fantasai]

Closing as invalid then? :) Reopen if there's an actual spec bug.

[birtles]

For the record, the Firefox bug for this is bug 956573.