【CSS】仿京东锚点侧边栏效果

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        ul {
            list-style: none;
            position: fixed;
            top: 100px;
            right: 0px;
        }

        li {
            width: 38px;
            height: 38px;
            line-height: 19px;
            font-size: 14px;
            padding: 10px;
            text-align: center;
            border: 0px solid #333;
            font-weight: bold;
            transition: color .2s ease;
        }
        li:hover{
            background: #e1251b;
        }
        li>a{
            text-decoration: none;
            color: #333;
        }
        li:hover a{
            color: white;
        }
        div{
            height: 600px;
            border: 1px solid #ccc;
        }
    </style>
</head>
<body>
<ul>
    <li><a href="#miaosha">京东秒杀</a></li>
    <li><a href="#tese">特色优选</a></li>
    <li><a href="#guangchang">频道广场</a></li>
    <li><a href="#tuijian">为你推荐</a></li>
    <li><a href="#kefu">客服</a></li>
    <li><a href="#fankui">反馈</a></li>
</ul>
<div id="miaosha">京东秒杀</div>
<div id="tese">特色优选</div>
<div id="guangchang">频道广场</div>
<div id="tuijian">为你推荐</div>
</body>
</html>