<ul class="nav nav-tabs nav-justified">
    <li class="active">
      <a href="#">Section 1</a>
    </li>
    <li>
      <a href="#">Section 2</a>
    </li>
    <li>
      <a href="#">Section 3</a>
    </li>
  </ul>
  <div class="tab-content">
    <div class="tab-pane active">
      <p>I'm Section 1</p>
    </div>
    <div class="tab-pane">
      <p>Howdy, I'm Section 2.</p>
    </div>
    <div class="tab-pane">
      <p>Section 3</p>
    </div>
  </div>