JSFiddle - React, Tailwind, and code Playground

HTML

<img src="http://vaughanrockets.typepad.com/.a/6a00d8354d1e6469e2015436bfa67b970c-800wi">

CSS

img {
    width: 100px;
    height: 100px;
    background: red;
    -webkit-transition: width 1s; /* For Safari 3.1 to 6.0 */
    transition: width 1s;
}

img:hover {
    width: 500px;
}