body {
  background-color: black;
  background: url(https://hacker3000.cf/randomfilehost/masterhax.gif);
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  background-size: cover;
  color: limegreen;
}

div.headerTop, div.headerBottom {
  background: black;
  color: lime;
}