Control options halfway hidden

The control options are halfway hidden with the default CSS. I fixed it for me by simply deleting the content of youtube.css. See the bottom of the screen. That is actually how it looks.
<img width="820" alt="screen shot 2017-08-13 at 19 41 37" src="https://user-images.githubusercontent.com/5469652/29252471-4db6b5c4-8068-11e7-8832-e7507533c293.png">
