Rounded Scroll To Top Button

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Rounded Scroll-to-Top Button</title>
    <style>
        body {
            font-family: 'Helvetica', sans-serif;
            margin: 0;
            padding: 0;
            min-height: 2000px;
            background: #efefef;
        }
        .scroll-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 60px;
            height: 60px;
            background-color: #3498db;
            border-radius: 30px;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 24px;
            color: #fff;
            cursor: pointer;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease-in-out;
            z-index: 1000;
        }
        .scroll-to-top:hover {
            background-color: #2980b9;
            transform: scale(1.1);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }
        .scroll-to-top:active {
            transform: scale(0.9);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
        .scroll-to-top-icon {
            animation: bounce 2s infinite;
        }
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-10px);
            }
            60% {
                transform: translateY(-5px);
            }
        }
    </style>
</head>
<body>
    <div class="scroll-to-top" id="scrollToTopBtn">
        <span class="scroll-to-top-icon">↑</span>
    </div>
    <script>
        const scrollToTopBtn = document.getElementById('scrollToTopBtn');
        const rootElement = document.documentElement;
        function handleScroll() {
            const scrollTotal = rootElement.scrollHeight - rootElement.clientHeight;
            if ((rootElement.scrollTop / scrollTotal) > 0.20) {
                scrollToTopBtn.style.opacity = '1';
                scrollToTopBtn.style.visibility = 'visible';
            } else {
                scrollToTopBtn.style.opacity = '0';
                scrollToTopBtn.style.visibility = 'hidden';
            }
        }
        function scrollToTop() {
            rootElement.scrollTo({
                top: 0,
                behavior: "smooth"
            });
        }
        scrollToTopBtn.addEventListener('click', scrollToTop);
        document.addEventListener('scroll', handleScroll);
    </script>
</body>
</html>

Rounded Scroll To Top Button - MeggiTools