JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://dl.dropboxusercontent.com/u/116120595/timg_120_60.png"></script>
<body>
<div>
<img src='http://www.petmd.com/sites/all/modules/breedopedia/images/thumbnails/cat/xtn-norwegian-forest-cat.jpg.pagespeed.ic.6FQs0BLqfr.jpg' />
<h3>Caption that should be no wider than the above image</h3>

    </div>
</body>

CSS

div {
display:table;
table-layout: fixed;
}
img {
max:100%;
    
}