帖子代码
<style>
#mydiv { margin: 0 0 0 calc(50% - 593px); width: 1024px; height: 640px; background: #333 url('https://638183.freep.cn/638183/t24/2/7-sword.jpg') no-repeat center/cover; box-shadow: 3px 3px 6px #333; user-select: none; overflow: hidden; z-index: 1; position: relative; }
.vid { position: absolute; object-fit: cover; pointer-events: none; }
.vid:nth-of-type(1) { width: 100%; height: 50%; mix-blend-mode: multiply; opacity: .3; }
.vid:nth-of-type(2) { bottom: 0; width: 100%; height: 60%; mix-blend-mode: screen; opacity: .6; }
#play { position: absolute; right: 100px; top: 20px; animation: rot 6s linear infinite var(--state); z-index: 9; cursor: pointer; }
@Keyframes rot { to { transform: rotate(360deg); } }
</style>
<div id="mydiv">
<video class="vid" src="https://cdn.pixabay.com/video/2022/11/13/138891-770540401_large.mp4" loop muted></video>
<video class="vid" src="https://img.tukuppt.com/video_show/2269348/00/14/17/5e1c948cb571e.mp4" loop muted></video>
<img id="play" src="https://638183.freep.cn/638183/small/dcjm.webp" width="80" height="80" alt="" />
</div>
<audio id="aud" src="https://music.163.com/song/media/outer/url?id=29999478" autoplay loop></audio>
<script>
var vids = document.querySelectorAll('.vid');
play.onclick = () => aud.paused ? aud.play() : aud.pause();
aud.onplaying = aud.onpause = () => mState();
var mState = () => {
mydiv.style.setProperty('--state', ['running','paused'][+aud.paused]);
playvid(+aud.paused);
};
var playvid = (flag) => vids.forEach(vid => flag ? vid.pause() : vid.play());
</script>
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