JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap.min.css">
 <div class="col-xs-3 col-sm-4 col-md-4 col-lg-3 well">

    </div>

    <div class="col-xs-6 col-sm-6 col-md-8 col-lg-8 well">

    </div>

CSS

.well {
	height: 100px;
	margin: 10px;
}