body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
}

header {
    background: #005baa;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 10px 0 0 0;
    display: flex;
    justify-content: center;
    gap: 30px;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.2s;
}

nav a:hover {
    color: #ffd700;
}

main {
    max-width: 800px;
    margin: 40px auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

footer {
    background: #222;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}