<div class="box1">
<video preload="auto" autoplay loop muted="muted" volume="0">
<source src="videos/splash4.mp4" type="video/mp4">
</video>
</div>
**This is the css**
.box1{
width:100%;
height:800px;
}
那么如何让这个视频适合Div?像http://www.google.com/nexus/7/如何添加适合div的视频
你试过吗?:'.box1 video {width:100%!important}' – TrungDQ