body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #333;
    color: white;
    padding: 1rem;
    max-width: 40rem;
    margin: 0 auto;
}