JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<div class="row">
	<div class="col-sm-6">A<br/>A</div>
	<div class="col-sm-6">B</div>
	<div class="col-sm-6">C<br/>C</div>
	<div class="col-sm-6">D</div>
	<div class="col-sm-6">E<br/>E</div>
	<div class="col-sm-6">F</div>
	<div class="col-sm-6">G<br/>G</div>
	<div class="col-sm-6">H</div>
	<div class="col-sm-6">I<br/>I</div>
	<div class="col-sm-6">J</div>
</div>

CSS

.col-sm-6{
    background:#DDDDDD;
}