.h1 {
  text-align: center;
  font-family: "Arial", sans-serif;
  color: #333;
  font-size: 2em;
  font-weight: bold;
  margin-top: 20px;
  margin-bottom: 20px;
  animation: colorChange 5s infinite;
}

@keyframes colorChange {
  0% {
    color: #333;
  } /* Dark grey */
  25% {
    color: #007bff;
  } /* Blue */
  50% {
    color: #28a745;
  } /* Green */
  75% {
    color: #dc3545;
  } /* Red */
  100% {
    color: #333;
  } /* Dark grey (back to start) */
}