The animation-fill-mode CSS property specifies how a CSS animation should apply styles to its target before and after it is executing.

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