The following code shows how to mark span label.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.9.1.js'></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<style type='text/css'>
@import<!-- ww w . j ava 2 s .co m-->
url('http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css')
;
</style>
</head>
<body>
<span class="label">test</span>
<span class="label">test 2</span>
</body>
</html>