The transition-property CSS property is used to specify the names of CSS properties to which a transition effect should be applied.

[Webplatform](http://docs.webplatform.org/wiki/css/properties/transition-property "Webplatform")
[Mozilla docs](https://developer.mozilla.org/en-US/docs/Web/CSS/transition-property "Mozilla")
[Caniuse](http://caniuse.com/#feat=css-transition "Caniuse")