<form action="xxx.php" method="post" class="form-horizontal" role="form">
<div class="control-group">
<label class="span2 control-label">
標題
</label>
<div class="span10 controls">
<input name="xxx" class="span12">
</div>
</div>
<div class="form-group">
<label class="col-md-2 control-label">
標題
</label>
<div class="col-md-10">
<input name="xxx" class="form-control ">
</div>
</div>