JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://yui.yahooapis.com/pure/0.4.2/pure-nr-min.css">
<div class="pure-g">
    <div class="pure-u-1-4">
        <img src="http://placehold.it/200x200" alt="">
        <br>
        <img src="http://placehold.it/200x200" alt="">
    </div>
    <div class="pure-u-1-2">
        <img src="http://placehold.it/400x400" alt="">
    </div>
    <div class="pure-u-1-4">
        <img src="http://placehold.it/200x200" alt="">
        <br>
        <img src="http://placehold.it/200x200" alt="">
    </div>
</div>

CSS

img {
    width:98%;
}