html, body {
    margin: 0;
    height: 100%;
}

body {
    background-color: white;
    color: black;
    font-family: monospace;
}

h1 {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    margin: 0;
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: black;
        color: white;
    }
}