滚动到顶部按钮-CFANZ编程社区

滚动到顶部按钮
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Scroll to Top Button</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            background-color: #f0f2f5;
            height: 2000px; /* For demonstration */
        }
        .scroll-top-button {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.5em;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            transition: background-color 0.3s;
        }
        .scroll-top-button:hover {
            background-color: #0056b3;
        }
    </style>
</head>
<body>
    <button class="scroll-top-button" onclick="scrollToTop()">⇧</button>

    <script>
        function scrollToTop() {
            window.scrollTo({ top: 0, behavior: 'smooth' });
        }
    </script>
</body>
</html>
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