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="container">
    <div class="row">
        <div class="col-sm-4">
            <div class="content">hi</div>
        </div>
        <div class="col-sm-4">
            <div class="content">hi</div>
        </div>
        <div class="col-sm-4">
            <div class="content">hi</div>
        </div>        

    </div>
</div>

CSS

.container {
    background-color:yellow;
    padding-left: 30px;
    padding-right: 30px;
}
.content {
    background-color:grey;
}