<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="page-header">
<h1>Bootstrap 3 grid examples</h1>
</div>
<div class="container">
<h4>A simple grid</h2>
<div class="row">
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-asterisk green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-plus green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-euro green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-minus green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-cloud green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-envelope green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-search green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-heart green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-star green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-user green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-film green"></i></div>
<div class="col-xs-6 col-md-3"><i class="glyphicon glyphicon-ok green"></i></div>
</div>
<hr>
<h4>Column nesting</h4>
<div class="row">
<div class="col-md-3">
<div class="row">
<div class="col-md-6"><i class="glyphicon glyphicon-cloud blue"></i></div>
<div class="col-md-6"><i class="glyphicon glyphicon-envelope blue"></i></div>