body {
  background: white;
  color: black;
  font-family: 'Orbitron', sans-serif;
  text-align: center;
  padding: 2rem;
}

h1, h2, h3, h4, h5, h6 {
  font-size: 3rem;
  font-weight: bold;
  background: linear-gradient(270deg, red, orange, yellow, green, blue, indigo, violet);
  background-size: 400% 400%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rainbowFlow 5s linear infinite, spin 8s linear infinite;
  display: inline-block;
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}