<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>
<br>
·······
<div class="btn-group" role="group">
<button type="button" class="btn btn-default btn-xs">
<i class="glyphicon glyphicon-plus"></i>
</button>
<button type="button" class="btn btn-default btn-xs">
<i class="glyphicon glyphicon-stats"></i>
</button>
</div>
