/* Basic responsive style */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background: #f9f9f9;
    color: #333;
}

header, footer {
    background: #004080;
    color: white;
    text-align: center;
    padding: 1rem 0;
}

nav {
    background: #e0e0e0;
}

nav ul {
    display: flex;
    list-style: none;
    justify-content: center;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    text-decoration: none;
    color: #004080;
    font-weight: bold;
}

main {
    padding: 2rem;
    max-width: 900px;
    margin: auto;
    background: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer p {
    margin: 0.5rem 0;
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
    }

    nav ul li {
        margin: 0.5rem 0;
    }
}