body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #004080;
    color: #fff;
    padding: 1em;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

header .logo {
    height: 40px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1em;
}

nav a {
    color: #fff;
    text-decoration: none;
}

main {
    padding: 2em;
}

footer {
    background-color: #002040;
    color: #ccc;
    text-align: center;
    padding: 1em;
}