body {
  background-color: black;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  color: white;
  font-family: Courier;
  text-align: center;
}
a:link {
  color: white
}
a:visited {
  color: yellow
}
a:hover {
  color: blue
}
a:active {
  color: white
}