The following code shows how to layout form control with span3.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<script type='text/javascript'
src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
</head><!--from w ww .jav a2s. c o m-->
<body>
<div class="container-fluid" style="background-color: white;">
<div class="row-fluid">
<div class="span3">
<label>test</label> <input type="text" class="input-block-level">
</div>
<div class="span3">
<label>test</label> <input type="text" class="input-block-level">
</div>
<div class="span3">
<label>test</label> <input type="text" class="input-block-level">
</div>
<div class="span3">
<label>test</label> <input type="text" class="input-block-level">
</div>
</div>
</div>
</body>
</html>