background-attachment:
默认值是scroll
fixed 不会随着其他的部分的滚动而滚动
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>demo01</title>
<style media="screen">
html,body{
width: 100%;
height: 100%;
}
.box{
width: 100%;
height: 100%;
overflow-y: scroll;
overflow-x: hidden;
}
.cont1{
width: 100%;
height: 400px;
background-image: url('http://www.alloyteam.com/wp-content/uploads/2014/01/section01.jpg');
background-size: cover;
background-repeat: no-repeat;
background-position: center;
background-attachment: fixed;
}
.cont2{
width: 100%;
height: 400px;
background-image: url('http://www.alloyteam.com/wp-content/uploads/2014/01/section02.jpg');
background-size: cover;
background-repeat: no-repeat;
background-position: center;
background-attachment: fixed;
}
.cont3{
width: 100%;
height: 400px;
background-image: url('http://www.alloyteam.com/wp-content/uploads/2014/01/section03.jpg');
background-repeat: no-repeat;
background-size: cover;
background-position: center;
background-attachment: fixed;
}
</style>
</head>
<body>
<div class="box">
<article class="cont1">
</article>
<article class="cont2">
</article>
<article class="cont3">
</article>
</div>
</body>
</html>
