The following code shows how to mark plus, trash, edit icon.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.8.3.js'></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css">
<style type='text/css'>
i {<!-- w w w.j av a 2 s .com-->
position: relative;
bottom: 2px;
}
</style>
</head>
<body style='margin:30px'>
<div class="btn-group">
<a class="btn" href="#">
<i class="icon-plus"></i> <span>Add</span>
</a>
<a class="btn" href="#">
<i class="icon-trash"></i> <span>Remove</span>
</a>
<a class="btn" href="#">
<i class="icon-edit"></i> <span>Edit</span>
</a>
</div>
</body>
</html>