固定 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
    .n1{
        width: 50px;
        height: 50px;
        border:1px solid;
        background-color: #999;
        position: fixed;    
        right: 50px;
        bottom: 100px;

    }
    </style>
</head>
<body>
    <div class="n1"><a href="#">返回<br>顶部</a></div>
    <div class="n2">
    <img src="images/2.jpg">
    <img src="images/2.jpg">
    <img src="images/2.jpg">
    <img src="images/2.jpg">
    <img src="images/2.jpg">
    <img src="images/2.jpg">
    </div>
</body>
</html>

posted @ 2016-12-04 01:26  浪里个浪浪  阅读(134)  评论(1)  编辑  收藏  举报