JSFiddle - React, Tailwind, and code Playground

HTML

<div class="rounded-box">
</div>

CSS

.rounded-box {
    display: block;
    width: 100px;
    height: 100px;
    background: url(http://bit.ly/1MjBCE6) no-repeat center;
    background-size: 100px 100px;
    transition: background-size 0.2s ease-in;
    border-radius: 5px;
}
.rounded-box:hover {
   background-size: 200px 200px;
}