joaohcrangel/menu.html

## menu.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hcode Menu</title>
    <style>
        body {
            margin: 0;
            width: 100%;
            overflow: hidden;
            position: relative;
        }
        #menu {
            background-color: black;
            color: azure;
            position: fixed;
            right: -300px;
            top: 0;
            width: 300px;
            height: 100vh;
            transition-duration: .5s;
        }
        #menu.open {
            right: 0;
        }
        #menu ul {
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-evenly;
            align-items: center;
        }
        #menu ul li {
            list-style: none;
            padding: 10px 0;
        }
        @media (min-width: 992px) {
            #menu {
                background-color: azure;
                color: initial;
                width: 100%;
                height: initial;
                right: initial;
            }
            #menu ul {
                flex-direction: row;
                height: 50px;
            }
        }
    </style>
<body>

    <button type="button" id="btn-menu">Menu</button>

    <nav id="menu">
        <ul>
            <li>Home</li>
            <li>Quem Somos</li>
            <li>Contato</li>
        </ul>
    </nav>

    <script>
        document.querySelector('#btn-menu').addEventListener('click', e => {

            document.querySelector('#menu').classList.toggle('open');

        });
    </script>

</body>
</html>