HTML Layout

<!DOCTYPE html>
<html>
<head>
    <style>
        body { font-family: sans-serif; margin: 0; background: #f8fafc; }
        header, footer { background: #0d2e5c; color: white; padding: 15px; text-align: center; }
        nav { background: #1e3a8a; padding: 8px; text-align: center; }
        nav a { color: #fca311; text-decoration: none; margin: 0 10px; font-weight: bold; }
        main { display: flex; padding: 15px; gap: 15px; }
        article { flex: 3; background: white; padding: 15px; border-radius: 8px; }
        aside { flex: 1; background: #e2e8f0; padding: 15px; border-radius: 8px; }
    </style>
</head>
<body>

    <header><h2>Header Website</h2></header>
    <nav><a href="#">Beranda</a> <a href="#">Materi</a> <a href="#">Kontak</a></nav>
    <main>
        <article>
            <h3>Artikel Utama</h3>
            <p>Konten artikel yang panjang diletakkan di sini.</p>
        </article>
        <aside>
            <h4>Sidebar</h4>
            <p>Informasi sampingan atau iklan.</p>
        </aside>
    </main>
    <footer>&copy; 2026 Skillance Academy</footer>

</body>
</html>