body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f5f5f5;
}

header, footer {
    background: #ddd;
    padding: 15px;
    border-radius: 6px;
}

.logo {
    width: 150px;
    margin: 20px 0;
}

nav a {
    margin-right: 10px;
    font-weight: bold;
}