Creative Dropdown Menu

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Amazing Dropdown Menu</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Raleway:[email protected]&display=swap" rel="stylesheet"> 
    <style>
        * {
            margin: 0;
            padding: 0;
            font-family: 'Raleway', sans-serif;
        }

        body {
            background-color: #292929;
        }

        section {
            display: flex;
            width: 100%;
            height: 100vh;
            justify-content: center;
            align-items: center;
            flex-flow: column;
        }

        button {
            background-color: #fff;
            color: #ed4e6e;
            font-size: 18px;
            padding: 8px 20px;
            border-radius: 5px;
            border: none;
            cursor: pointer;
        }

        ul#menu {
            list-style: none;
            width: 200px;
            margin-top: 20px;
        }

        ul#menu li {
            margin: 5px 0;
            opacity: 0;
            transition: 0.5s all cubic-bezier(0.31,-0.105,0.43,1.4);
        }

        ul#menu li:nth-child(even) {
            transform: translateX(50px);
        }

        ul#menu li:nth-child(odd) {
            transform: translateX(-50px);
        }

        ul#menu li:nth-child(1) {
            transition-delay: 0.1s;
        }

        ul#menu li:nth-child(2) {
            transition-delay: 0.2s;
        }

        ul#menu li:nth-child(3) {
            transition-delay: 0.3s;
        }

        ul#menu li:nth-child(4) {
            transition-delay: 0.4s;
        }

        ul#menu.active li {
            opacity: 1;
            transform: translateX(0px);
        }

        ul#menu li a {
            background-color: #ed4e6e;
            display: block;
            padding: 8px 20px;
            font-weight: 500;
            color: #fff;
            text-decoration: none;
            border-radius: 3px;
        }
        
    </style>
    <script>
        function toggleMenu() {
            let menu = document.getElementById('menu');
            menu.classList.toggle('active');
        }
    </script>
</head>
<body>
    <section>
        <button onclick="toggleMenu()">Menu</button>
        <ul id="menu">
            <li><a href="">Home</a></li>
            <li><a href="">About Us</a></li>
            <li><a href="">Services</a></li>
            <li><a href="">Contact us</a></li>
        </ul>
    </section>
</body>
</html>
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Result Screenshot(s)

Creative Dropdown MenuWorking Sample0