html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: black;
  font-family: 'STIX Two Text', serif;
  color: rgba(255, 255, 255, 0.5);
}

#canvas {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
}

.center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 1;
  font-size: 5rem;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
  animation: blink 3s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}