代码如下：
doctype html>html lang=en>head> meta charset=utf-8> title>lighttitle> style> body{ margin: 0; } a.floor{ display: block; height: 475px; } a.floor:hover:before{ -webkit-transition: left 1.5s; -moz-transition: left 1.5s; transition: left 1.5s; left: 920px; } a.floor:before{ content: ; position: absolute; width: 80px; height: 475px; top: 0; left: -150px; overflow: hidden; background: -moz-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%); background: -webkit-gradient(linear,left top,right top,color-stop(0%,rgba(255,255,255,0)),color-stop(50%,rgba(255,255,255,.2)),color-stop(100%,rgba(255,255,255,0))); background: -webkit-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%); background: -o-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%); -webkit-transform: skewx(-25deg); -moz-transform: skewx(-25deg); } style>head>body>a class=floor href=javascript:;> img src=./images/girl.jpg height=475 width=760 alt=>a>body>html>
存下来备用！