.dimcentered {
  position: fixed;
  top: 50%;
  left: 50%;
  /* bring your own prefixes */
  transform: translate(-50%, -50%);
  opacity: 0.25;
}

.centered {
  position: fixed;
  top: 50%;
  left: 50%;
  /* bring your own prefixes */
  transform: translate(-50%, -50%);
}

body {
  background-color: GhostWhite;
}

#copyright {
    position: absolute;
    bottom: 0;
}