JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
 <div class="row"> 
     <div class="col-md-4 col-sm-6">
        content 1
    </div>
    <div class="col-md-4 col-sm-6">
        content 2
    </div>
    <div class="col-md-4 col-sm-6">
        content 3
    </div>
    <div class="col-md-4 col-sm-6">
        content 4
    </div>
    <div class="col-md-4 col-sm-6">
        content 5
    </div>
    <div class="col-md-4 col-sm-6">
        content 6
    </div>
</div>

CSS

div {
    background: blue;
}