<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>
<div class="container subscription-form">
<div class="row">
<div class="col-md-12">
<div class="tabbable-panel">
<div class="tabbable-line">
<ul class="nav nav-tabs ">
<li class="active">
<a href="#tab_default_1" data-toggle="tab">
Billing Information </a>
</li>
<li>
<a href="#tab_default_2" data-toggle="tab">
Payment Information </a>
</li>
<li>
<a href="#tab_default_3" data-toggle="tab">
Shipping Information </a>
</li>
</ul>
<div class="tab-content">
<div class="tab-pane" id="tab_default_1">
<p>
<a class="btn btn-default active existing-customer-email-btn">
Existing Customer
</a>
<a class="btn btn-default new-customer-email-btn">
New Customer
</a>
</p>