Video link effect in my article. (在我文章里链接的视频具体效果)
This is my video about Java sparse array in Bilibili. (这是我在B站关于Java稀疏数组的视频)

Key code segment. Other tools that support markdown may also be used.(关键代码段，其它支持markdown语法的工具也许同样能使用)

<div style="position: relative; padding: 30% 45%;">
    <iframe style="
        position: absolute; 
        width: 100%; 
        height: 100%; 
        left: 0; top: 0;" 
        src="//player.bilibili.com/player.html?aid=847220411&bvid=BV1L54y1E7RQ&cid=385215083&page=1&high_quality=1" 
        scrolling="no" 
        border="0" 
        frameborder="no" 
        framespacing="0" 
        allowfullscreen="true">
    </iframe>
</div>

Operation video of this article andhow to build a blog by Gridea.