I am using Bootstrap 3 with form-horizontal in form tag. I am making use of form-group as shown in below sample HTML. span is not inline with input control as it is expected by using form-horizontal.
<form name="productForm" class="form-horizontal">
<div class="col-lg-6">
<div class="form-group">
<span class="col-lg-4 col-md-4 col-sm-4 col-xs-4" style="text-align:right;">Number</span>
<div class="col-lg-8 col-md-8 col-sm-8 col-xs-8">
<input type="text" class="form-control control-look-input" />
<div class="control-look"></div>
</div>
</div>
<div class="form-group">
<span class="col-lg-4 col-md-4 col-sm-4 col-xs-4" style="text-align:right;">Name</span>
<div class="col-lg-8 col-md-8 col-sm-8 col-xs-8">
<input type="text" class="form-control control-look-input" />
<div class="control-look"></div>
</div>
</div>
</div>
<!-- More tags -->
For better understanding this is the fiddle for it
Solution for reference: Refer control-label class in span to get it working like fiddle working

