html {
  font-family: sans-serif;
  max-width: 70ch;
  padding: 3em 1em;
  margin: auto;
  line-height: 1.75;
  font-size: 1.25em;
}

@media (prefers-color-scheme: dark) {
  html {
    background-color: #333;
    color: #fff;
  }
}

a {
  filter: brightness(180%);
}