body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background: #f5f5f5;
}

h1 {
    color: #333;
}

a {
    color: #0066cc;
}