vanilla-raptorize.css

@keyframes raptorGO {
  25%  {
    transform: translateY(0);
  }
  35%  {
    right: 0;
    transform: translateY(25%);
  }
  75%  {
    opacity: 1;
  }
  100% {
    opacity: 0;
    right: 100%;
    transform: translateY(25%);
  }
}

.raptor {
  display: none;
  bottom: 0;
  position: fixed;
  transform: translateY(100%);
  right: 0;
}

.raptor-go {
  animation: raptorGO 2500ms;
}