position固定菜单栏

position:fixed来实现.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>菜单栏固定</title>
    <style>
        body {
            margin: 0;
        }

        .menu {
            height: 48px;
            background-color: black;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
        }

        .content {
            margin-top: 50px;
            height: 5000px;
            background-color: beige;
        }
    </style>
</head>
<body>
<div class="menu">菜单栏</div>
<div class="content">内容页</div>
</body>
</html>
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原文地址：https://www.cnblogs.com/iiiiher/p/6442408.html