* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: Arial, sans-serif;
}

.retro-background {
  height: 100vh;
  width: 100vw;
  background: linear-gradient(
    45deg,
    #ff1493,
    #00bfff,
    #9932cc,
    #00ffff,
    #8a2be2,
    #ff69b4
  );
  background-size: 400% 400%;
  animation: retroFlow 8s ease-in-out infinite;
  display: flex;
  align-items: center;
  justify-content: center;
}

.retro-text {
  color: white;
  font-family: 'Arial Black', Arial, sans-serif;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 6rem;
}

@media (max-width: 768px) {
  .retro-text {
    font-size: 3rem;
  }
}

@media (min-width: 768px) {
  .retro-text {
    font-size: 8rem;
  }
}

@media (min-width: 1024px) {
  .retro-text {
    font-size: 9rem;
  }
}

@keyframes retroFlow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}