:any-link {
  color: chartreuse;
  outline-color: rebeccapurple;
  background: darkviolet;
}

::selection {
  background: fuchsia;
  color: purple;
}

html {
  color: indigo;
  background: silver;
}

.uno {
  color: #eac;
  background-color: #1111;
  background-color: #111;
}

.bae {
  color: #111;
  background: #bae;
}

@media (prefers-contrast: less),
  (prefers-color-scheme: dark) {
  html {
    color: plum;
    background: purple;
  }
}

mark {
  color: plum;
  background: indigo;
}