::selection {
  background: #ee1;
  color: darkviolet;
}

:root {
  background-color: coral;
  background-image: conic-gradient(gold, turquoise, hotpink, violet, mediumaquamarine, deepskyblue);
  color: indigo;
}

:any-link {
  color: indigo;
  background-color: transparent;
  text-shadow:
    2vw -3vh 1pc,
    3vw -5vh 2pc,
    5vw -8vh 3pc;
}

:focus {
  background-color: blueviolet;
  color: plum;
  outline: 1rem groove indigo;
}

a:hover {
  color: indigo;
  background-color: skyblue;
}