 style="margin-bottom: 18px;">
  <ul class="nav nav-tabs">
    <li class="active"><a href="#tab1" data-toggle="tab">Section 1</a></li>
    <li><a href="#tab2" data-toggle="tab">Section 2</a></li>
    <li><a href="#tab3" data-toggle="tab">Section 3</a></li>
  </ul>
  <div class="tab-content" style="padding-bottom: 9px; border-bottom: 1px solid #ddd;">
    <div class="tab-pane active" id="tab1">
      <p>I'm in Section 1.</p>

      <div class="tabbable" style="background: #f5f5f5; padding: 20px;">
        <u