JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<div class="container-fluid">
    <div class="row">
        <div class="row col-md-8">
            <div class="col-sm-6 col1">col 1</div>
            <div class="col-sm-6 col2">col 2</div>
        </div>
        <div class="col-md-4 col3">col 3</div>
    </div>
</div>

CSS

.col1 {
    background: red;
}
.col2 {
    background: green;
}
.col3 {
    background: blue;
}