页面图片光影掠过效果
很多页面中图片上会加上一道光影的效果，简单的效果如图：
<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<style type="text/css">
.logo-site:before{
content:"";
position: absolute;
left: -165px;
top: -160px;
width: 200px;
height: 25px;
background-color: rgba(255,255,255,.5);
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
-webkit-animation: searchLights 1s ease-in 1s infinite;
-o-animation: searchLights 1s ease-in 1s infinite;
animation: searchLights 1s ease-in 1s infinite;
}
@-webkit-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@-o-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@-moz-keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
@keyframes searchLights {
0% { left: -100px; top: 0; }
to { left: 120px; top: 100px; }
}
</style>
<div class="logo-site" style="width:150px;height:50px;background:blue;"></div>
</body>
</html>