<script src="http://code.jquery.com/jquery.min.js"></script>

<link href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css" rel="stylesheet" type="text/css" />

<link href="http://twitter.github.com/bootstrap/assets/css/bootstrap-responsive.css" rel="stylesheet" type="text/css" />

<script src="http://twitter.github.com/bootstrap/assets/js/bootstrap.js"></script><div class="container">

    <div class="row">

        <div class="span6 offset3">

            <form>

                <input class="input-xxlarge" type="text" placeholder="Email..">

                <div class="form-actions">

    <button type="submit" class="btn">Confirm</button>

</div>

            </form>

        </div>

    </div>

</div>