facebook/react — pull request #2099 by deadlyicon (2014-08-28 00:19:34+00:00)
Title: move transition into `example-enter-active` selector

I was only able to get these animations to work by placing the `transition` declaration within the `example-enter-active` selector. When it was in the `example-enter` selector it didn't work.

For whatever reason the animation began when the `example-enter` classname was added and was then halted when the `example-enter-active` classname was added.

Chrome Version 36.0.1985.143