如何优雅的在WordPress插入Bilibili视频

优化代码：

<div style="position: relative; padding: 40% 45%;">
<iframe src="//player.bilibili.com/player.html?aid=500393120&amp;bvid=BV1xK411V7nT&amp;cid=261359360&amp;page=1" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true" style="position: absolute; width: 100%; height: 100%; left: 0; top: 0;">
</iframe>
</div>