  <br />
    <!-- btn disabled-->
    <h2>btn-disabled</h2>
    <button class="btn btn-disabled">btn btn-disabled</button>
    <button class="btn btn-disabled btn-small">btn btn-disabled</button>
    <button class="btn btn-disabled btn-medium">btn btn-disabled</button>
    <button class="btn btn-disabled btn-large">btn btn-disabled</button>
    <button class="btn btn-disabled btn-mega">btn btn-disabled</button>
    </div>
  </body>

</html>