I suspect what is holding it up is both browser support and the time required to get it right. Maybe they don't use animate but provide a separate wrapper. Ke

I suspect what is holding it up is both browser support and the time required to get it right. Maybe they don't use animate but provide a separate wrapper. Keep in mind, the specs are rather large. When people talk about CSS "animations" there really talking about at least 3 specs, maybe 4. CSS 2D transforms, CSS 3D transforms, CSS transitions and CSS animation. There is a lot of work to get it right and tested in a nice JS wrapper, not to mention making it work with an existing JS based API.