<!-- 大模态框的调节 -->

<button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bs-example-modal-lg">Large modal</button>

<div class="modal fade bs-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel">

  <div class="modal-dialog modal-lg">

    <div class="modal-content">

      ...

    </div>

  </div>

</div>

<!-- 小尺寸的调节 -->

<button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bs-example-modal-sm">Small modal</button>

<div class="modal fade bs-example-modal-sm" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel">

  <div class="modal-dialog modal-sm">

    <div class="modal-content">

      ...

    </div>

  </div>

</div>