Only CSS: Color Slime Shake Shake
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_Created for the [December 2018 CodePen Challenge](https://codepen.io/challenges/2018/December)_

A [Pen](https://codepen.io/YusukeNakaya/pen/xmGvOZ) by [Yusuke Nakaya](https://codepen.io/YusukeNakaya) on [CodePen](https://codepen.io).

[License](https://codepen.io/YusukeNakaya/pen/xmGvOZ/license).