/* Global Styles */

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header, nav, section, footer {
    padding: 20px;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav li {
    display: inline;
    margin-right: 20px;
}

a {
    text-decoration: none;
    color: #333;
}

/* Responsive Styles */

@media screen and (max-width: 768px) {
    nav ul {
        text-align: center;
    }

    nav li {
        display: block;
        margin: 10px 0;
    }
}

@media screen and (max-width: 600px) {
    section {
        padding: 10px;
    }
}

@media screen and (max-width: 480px) {
    h1 {
        font-size: 1.5em;
    }

    h2 {
        font-size: 1.2em;
    }
}