@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    header {
        font-size: 18px;
        padding: 8px 0;
    }

    nav {
        padding: 8px;
    }

    nav ul {
        flex-direction: row;
    }

    nav a {
        padding: 8px;
        font-size: 14px;
    }
}