body {
  font-family: monospace;
  margin: 40px;
  background-color: #1d1d1d;
  color: #ffffff;
}

h1 {
  animation: blink 1.5s steps(1) infinite;
}

@keyframes blink {
  0%, 50% {
    opacity: 1;
  }
  50.01%, 100% {
    opacity: 1%;
  }
}