<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2>Create your snippet's HTML, CSS and Javascript in the editor tabs</h2>
<form class="form-horizontal">
<fieldset>
<legend>Construye tu Telefono</legend>
<div class="form-group">
<label class="col-md-4 control-label" for="pantallasize">I Selecciona el tamaño de tu pantalla</label>
<div class="col-md-5">
<select id="pantallasize" name="pantallasize" class="form-control">
<option value="140">3.5 plg $1299</option>
<option value="145">4.0 plg $1440</option>
<option value="150">5.0 plg $2163</option>
<option value="155">5.5 plg PRONTO</option>
</select>
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label" for="marcotipo">II Seleciona tu marco</label>
<div class="col-md-5">
<select id="marcotipo" name="marcotipo" class="form-control">
<option value="Blanco">Blanco</option>
<option value="Blanco metal">Blanco metal</option>
<option value="Negro plastico">Negro plastico</option>
<option value="Negro Metal">Negro Metal</option>
<option value="Negro Transparente">Negro Transparente</option>