@keyframes pulseBackground {
  0% { opacity: 1; }
  50% { opacity: 0.95; }
  100% { opacity: 1; }
}

.void-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom right, #000000, #5e2e91);
  z-index: -1;
  animation: pulseBackground 8s ease-in-out infinite alternate;
}