记录一下
background-attachment: fixed; 重点代码
demo 在下面
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
html,body{
width: 100%;
height: 100%;
}
.img{
width: 100%;
height: 100%;
background: url(sy.png) no-repeat;
background-size:100% 100%;
background-attachment: fixed;
}
</style>
<body>
<div class="img" id="img"><div>
</body>
</html>
