JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/css/bootstrap.min.css">
    <div class="container">
<div class="row-fluid col-wrap">
<div class="span9 col">
<p>left column </p>
<p>left column </p>
<p>left column </p>
<p>left column </p>
<p>left column </p>
<p>left column </p>
</div><!-- end span 9-->
    

    
<div class="span3 col">
<p>right column </p>
<p>right column </p>

</div><!-- end span 3-->

</div><!-- end row-fluid -->
    

</div>

CSS

.col{
   
    background-color:#ffc;
}

.col-wrap{
    overflow: hidden; 
}