JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://dl.dropboxusercontent.com/u/32750720/works/common%20resources/prefixfree.min.js"></script>
<div class='container'>
    <div></div>
    <div></div>
</div>

CSS

.container{
    background: teal;
}
.container > div{
    width: 200px;
    height: 200px;
    display: inline-block;
    background: red;
}

JavaScript

$(function () {
   console.log(''); $('.container').width($(window).height()).height($(window).width());
    $(window).resize(function () {
 $('.container').width($(window).height()).height($(window).width());
    });

});