<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>
<p>
<button type = "button" class = "btn btn-default">
<span class = "glyphicon glyphicon-sort-by-attributes"></span>
</button>
<button type = "button" class = "btn btn-default">
<span class = "glyphicon glyphicon-sort-by-attributes-alt"></span>
</button>
<button type = "button" class = "btn btn-default">
<span class = "glyphicon glyphicon-sort-by-order"></span>
</button>
<button type = "button" class = "btn btn-default">
<span class = "glyphicon glyphicon-sort-by-order-alt"></span>
</button>
</p>
<button type = "button" class = "btn btn-default btn-lg">
<span class = "glyphicon glyphicon-user"></span>
User
</button>
<button type = "button" class = "btn btn-default btn-sm">
<span class = "glyphicon glyphicon-user"></span>
User
</button>
<button type ="button" class = "btn btn-default btn-xs">
<span class = "glyphicon glyphicon-user"></span>
