nav{background:#222;padding:10px}nav ul{list-style:none;display:flex;justify-content:center;gap:15px}nav li{display:inline}nav a{text-decoration:none;color:#fff;font-size:18px;padding:8px 12px}nav a:hover{background:#444;border-radius:5px}footer{text-align:center;padding:10px;background:#222;color:#fff;margin-top:20px}