JSFiddle - React, Tailwind, and code Playground

HTML

<div>btn</div>

CSS

div{
 width:75px;height:45px;
 background:url(http://i.stack.imgur.com/8yNbR.png) no-repeat 0px 0px;
 background-size:75px 135px;
 text-align:center;
 line-height:45px;
}
div:hover{
 background-position:0px -45px;
}