::selection {
  background: indigo;
  color: pink;
}

:root {
  background: #ddd;
  color: #100;
}

:link {
  background: #eee;
  color: blueviolet;
}

:visited {
  background: #eee;
  color: darkviolet;
}

:any-link:hover {
  background: oldlace;
  color: darkorchid;
  text-decoration-color: darkslateblue;
}

mark {
  background: salmon;
  color: #100;
}