<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container-fluid">
<div class="row-fluid">
<div class="centering text-center">
<h3>Hi! I'm centered</h3>
<p class="lead">I'm not the author of this snippet, just found it <a href="https://html5devgal.wordpress.com/2013/05/29/vertically-and-horizontally-center-with-twitter-bootstrap-responsive/">here</a>!</p>
</div>
</div>
</div>