body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: 100vh;
    background-color: #fff;
}

main {
    padding: 2rem;
    text-align: center;
}