是否可以在Twitter Bootstrap中使用"行"和"跨越"内部模态？

<div class="modal" tabindex="-1" role="dialog" id="myModal">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title">模态标题</h5>
       <button type="button" class="close" data-dismiss="modal" aria-label="关闭">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        <p>模态内容...</p>
      </div>
      <div class="modal-footer">
       <button type="button" class="btn btn-primary">保存</button>
       <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
      </div>
    </div>
  </div>
</div>

$('#myModal').modal('show');

<div class="modal-body">
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-6">列1</div>
      <div class="col-md-6">列2</div>
    </div>
  </div>
</div>