<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>阴影效果</title>
<style type="text/css">
div{
position: absolute;
left: 300px;
top: 300px;
width: 300px;
height: 300px;box-shadow: 0px 0px 100px 10PX red;
border: 1px solid red;
}
</style>
</head>
<body>
<div>
</div>
</body>
</html>
随时随地看视频
