<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="container">
<div class="row">
<h3>Bootstrap Grid Visualizer - Shoelace</h3>
<p>
<a href="http://www.shoelace.io/#cc41c60ea7449064f06f" target="_blank"><img src="http://i.imgur.com/tZP3duv.png?1" class="pull-right" alt="">
</a>
</p>
<p>
It's often difficult (if not IMPOSSIBLE) to visualize how parameters of the <a href="http://getbootstrap.com/css/#grid-example-mixed">Bootstrap grid</a> system work across multiple devices.
<br>The container below contains classes for many devices. To fully understand it, click on image and visualize with <a href="http://www.shoelace.io/#cc41c60ea7449064f06f" target="_blank">Shoelace.com</a>.
<p>Best viewed: <a href="http://bootsnipp.com/iframe/3kxVp" target="_blank">full screen</a>
</p>
</div>
</div>
<hr>
<div class="container">
<div class="row">
<h3>Sample Bootstrap Columns</h3>
<div class="col-sm-1 col-md-1">
<div class="alert alert-success" role="alert"><small>col-sm-1 col-md-1</small>
</div>
</div>
<div class="col-sm-4 col-md-3">
<div class="alert alert-success" role="alert">col-sm-4 col-md-3</div>
</div>
<div class="col col-sm-7 col-md-8">
<div class="alert alert-info" role="alert">col col-sm-7 col-md-8</div>
</div>
</div>
