如何在Bootstrap Modal上加载微调器动画

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h4 class="modal-title" id="myModalLabel">Modal标题</h4>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        <!-- 在这里加载微调器动画 -->
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
        <button type="button" class="btn btn-primary">保存</button>
      </div>
    </div>
  </div>
</div>

<div class="modal-body my-animation">
  <!-- 在这里加载微调器动画 -->
</div>

@keyframes my-animation {
  0% {
    /* 定义初始状态 */
  }
  50% {
    /* 定义中间状态 */
  }
  100% {
    /* 定义最终状态 */
  }
}

.my-animation {
  animation: my-animation 1s infinite;
}

$('#myModal').on('shown.bs.modal', function () {
  // 在Modal显示时触发动画效果的JavaScript代码
});

<div class="modal-body">
  <div class="my-animation animated">
    <!-- 在这里加载微调器动画 -->
  </div>
</div>

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