@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --fg: #444444;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #444444;
        --fg: #ffffff;
    }
}

body {
    font-family: system-ui, sans-serif;
    background: var(--bg);
    color: var(--fg);
}

main {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: center;
}

nav {
    position: absolute;
    top: 8px;
    left: 8px;
}

a {
    color: var(--fg);
    opacity: 75%;
}