Bugzilla – Bug 14988
Clarify vertical-align animatability
Last modified: 2012-03-29 19:15:11 UTC
The spec lists vertical-align as animatable for the keywords, length and percentage types. There is no indication on how it can animate keyword values though.
I think we really want to say that length and percentage values of vertical align animate.
Fixed in http://dvcs.w3.org/hg/csswg/rev/5bd89ada5492