body {
    background-color: #e5e5e5;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

main {
    max-width: 600px;
    margin: auto;
    border-radius: 1rem;
    box-shadow: 4px 4px 6px darkgrey;
    padding: 1rem;
    background-color: #f9f9f9;
    margin-top: 1rem;
}

h1 { text-align: center; }