b站测试
<div style="position: relative; width: 100%; height: 0; padding-bottom: 75%;"><iframe src="https://player.bilibili.com/player.html?isOutside=true&aid=117230595477543&autoplay=false" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"sandbox="allow-top-navigation allow-same-origin allow-forms allow-scripts"style="position:absolute; height: 100%; width: 100%;"> </iframe>
</div>
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