<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>
<section>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<hgroup>
<h2>
Subscribe for
<select class="frecuency">
<option value="0">daily</option>
<option value="1" selected>weekly</option>
<option value="2">monthly</option>
</select>
newsletter
</h2>
<h1 class="free">For Free</h1>
</hgroup>
<div class="well">
<form action="#">
<div class="input-group">
<input class="btn btn-lg" name="email" id="email" type="email" placeholder="Your Email" required>
<button class="btn btn-info btn-lg" type="submit">Submit</button>
</div>
</form>
</div>
<small class="promise"><em>We won't send spam.</em></small>
</div>
</div>
</div>
</section>