JSFiddle - React, Tailwind, and code Playground

by Vladimir

HTML

<button>
<div class="bg">

</div>
<div class="text">
Click me
</div>
</button>

CSS

button {
  color: #fff;
  background: #3F3;
  font-size: 26px;
    width: 150px;
    height: 60px;
   position: relative;
   padding: 0;
}
button .bg {
  position: absolute;
    background: #cd66ff;
    width: 0;
    top: 0;
    left: 50%;
    overflow: hidden;
    height: 100%;
}
button:hover .bg {
    width: 100%;
    top: 0;
    left: 0;
    height: 100%;
    transition: all 300ms ease;
}
button .text {
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  height: 100%;
  text-align: center;
  line-height: 60px;
}