selfdocbook.css

html, body {
  background-color: #e5e9e5;
  color: black;
}

a:link {
  color: #0000ee;
  background-color: transparent;
}

a:hover {
  color: #000088;
  background-color: transparent;
}

a:visited {
  color: #551a8b;
  background-color: transparent;
}

a:active {
  color: #ff0000;
  background-color: transparent;
}