<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<form class="form-horizontal">
<fieldset>
<legend>Cadastro de produto</legend>
<div id="control-group">
<div class="control-group">
<label class="control-label" for="txtgrupo">Grupo</label>
<div class="controls">
<select id="txtgrupo" name="txtgrupo" class="input-medium">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
</div>
</div>
<div class="control-group">
<label class="control-label" for="txtproduto">Produto</label>
<div class="controls">
<input id="txtproduto" name="txtproduto" type="text" placeholder="" class="input-xlarge">
</div>
</div>
<div class="control-group">