<title>Bootstrap Grid</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
<div class="container" style="padding:50px;">
<button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">Dropdown Demo Example
<span class="caret"></span></button>
<ul class="dropdown-menu">
<li><a href="#">Home</a></li>
<li class="divider"></li>
<li><a href="#">Settings</a></li>
<li><a href="#">Logout</a></li>