JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrap">
    <img src="http://i42.tinypic.com/124bst0.jpg" />
</div>

CSS

* {
    margin: 0px;
    padding: 0px;
}

#wrap {
    display: table-cell;
    text-align: center;
    vertical-align: middle;
    width: 420px;
    height: 315px;
    overflow: hidden;
    border: 1px red solid;
}
    #wrap img {
        width: 50%;
        height: 50%;
    }
    #wrap img:hover {
        width: 420px;
        height: 315px;
    }