<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>
<div class="container">
<div class="row">
<div class="ui-group-buttons">
<button type="button" class="btn btn-primary btn-lg">Large button</button>
<div class="or or-lg"></div>
<button type="button" class="btn btn-success btn-lg">Large button</button>
</div>
<br />
<br />
<div class="ui-group-buttons">
<button type="button" class="btn btn-primary">Default</button>
<div class="or"></div>
<button type="button" class="button btn btn-success">Success</button>
</div>
<br />
<br />
<div class="ui-group-buttons">
<button type="button" class="btn btn-primary btn-sm">Small button</button>
<div class="or or-sm"></div>
<button type="button" class="btn btn-success btn-sm">Small button</button>
</div>
<br />
<br />
<div class="ui-group-buttons">
<button type="button" class="btn btn-primary btn-xs">Extra small button</button>
<div class="or or-xs"></div>
<button type="button" class="btn btn-success btn-xs">Extra small button</button>
</div>
</div>
</div>
