视频

<!-- autoplay loop muted preload -->
<!-- audio除了不支持宽高和poster，其他都和video一样 -->
<video controls
    poster="./images/logo-google.png">
    <source src="./videos/rabbit320.mp4" type="video/mp4">
    <source
        src="https://raw.githubusercontent.com/mdn/learning-area/master/html/multimedia-and-embedding/video-and-audio-content/rabbit320.webm"
        type="video/webm">
    <p>Your browser doesn't support HTML5 video. Here is a <a
            href="rabbit320.webm">link to the video</a> instead.</p>
</video>