[案例] 通过 CSS 在网页中把视频当作背景

核心代码为:
<section class="section-introduction fullscreen" id="introduction" style="height: 597px;">
<div class="hero-novideo-bg">
</div>
<div class="hero-media">
<video autoplay="" id="lifestyle-lapse" loop="" mute="">
<source src="http://jcgy.qiniudn.com/koudai-test-karma-lifestyle-film.mp4"
type="video/mp4">
</video>
</div>
<div class="hero-media-mask">
</div>
<div class="introduction vertical-align text-center fade in" style="margin-top: -78.5px;">
<p>
内容.
</p>
</div>
</section>
案例页面: http://koudai.vows.cn/