html5 video视频标签自适应手机样式

css

.vid-wrap{
    width:100%;background: #000;
    position:relative;
    padding-bottom:56.25%;    /*需要用padding来维持16:9比例,也就是9除以16*/
    height: 0;
}
.vid-wrap video{
    position: absolute;
    top:0;
    left: 0;
    width: 100%;
    height: 100%
}

html

<div class="vid-wrap">
    <video controls autoplay loop>
	<source src="" type="video/mp4">
    </video>
</div