JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<div class="page-container">
	<div class="sidebar">
		
	</div>
	<div class="main-content">
		<div class="row">
			<div class="well custom-well"></div>
		</div>
	</div>
</div>

CSS

html, body {
	height: 100%;
}
.page-container {
	height: 100%;
}
.sidebar {
	height: 100%;
	background: #ddd;
	width: 200px;
	float: left;
}
.main-content {
	height: 100%;
	margin-left: 200px;
	background: #555;
}