@keyframes rainbow {
  0% {
    color: #ff0000; /* Red */
  }
  17% {
    color: #ffff00; /* Yellow */
  }
  34% {
    color: #00ff00; /* Green */
  }
  51% {
    color: #00ffff; /* Cyan */
  }
  68% {
    color: #0000ff; /* Blue */
  }
  85% {
    color: #ff00ff; /* Magenta */
  }
  100% {
    color: #ff0000; /* Red */
  }
}

/* Apply animation to font */
h1 {
  margin-bottom: 20px;
  font-size: 25px;
  background: linear-gradient(to right, #ff0000, #ffff00, #00ff00, #00ffff, #0000ff, #ff00ff, #ff0000);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rainbow 3s linear infinite;
}