body {
    font-family: sans-serif;
    margin: auto;
    max-width: 66ch;
    padding: 2ch;
}
:any-link {color: unset}
:hover {text-decoration-style: wavy}
body {color: #333; background: #BBB;}
@media (prefers-color-scheme: dark) {
    body {color: #CCC; background: #555;}
}