body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    border-bottom: 1px solid #ccc;
    margin-bottom: 30px;
    padding-bottom: 10px;
}

nav a {
    margin-right: 15px;
    text-decoration: none;
    color: #333;
}

footer {
    margin-top: 50px;
    border-top: 1px solid #ccc;
    padding-top: 10px;
    color: #666;
}