JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<div class="container">
     <div class="row">
        <div class="col-sm-6">
            <h1> Dit is een bootstrap site</h1>
            <button type="button">click me!</button>
        </div>
        <div class="col-sm-6">
            <div class="contentblock1">
                TESTESTETETSTEEwefwefwefwefwef
            </div>
        </div> 
    </div>    
</div>

CSS

.contentblock1 {
background-image: url('http://1.bp.blogspot.com/_zxdOSKs0ASI/TDMqbnatRwI/AAAAAAAAAkM/nB-DxcVcqqk/s1600/Testbeeld.jpg');
background-size: 100% 100%;
width: 100%;
}