:root {
    --bg: #ffdd;
}

@media (prefers-color-scheme: dark) {
    :root {
	--bg: #222;
    }
    img {
	filter: saturate(50%);
    }
}

html {
    background-color: var(--bg);
}

body {
    margin: 0;
    padding: 0;
    display: flex;
    text-align: center;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

img {
    max-width: 75%;
    height: auto;
}

a {
    text-decoration: none;
}