src/css/components/_button.scss
.video-js button {
background: none;
border: none;
color: inherit;
display: inline-block;
overflow: visible; // IE8
font-size: inherit; // IE in general. WTF.
line-height: inherit;
text-transform: none;
text-decoration: none;
transition: none;
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
}