html, body {
  margin: 0;
  padding: 0;
}
canvas {
  display: block;
}
.title, .subtitle, .back-link {
  font-family: monospace;
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  z-index: 10;
  color: #fff;
  mix-blend-mode: difference;
  pointer-events: none;
  margin: 0;
  text-align: center;
}
.title {
  top: 16px;
  font-size: 15px;
  font-weight: bold;
}
.subtitle {
  top: 40px;
  font-size: 12px;
  opacity: 0.7;
}
.back-link {
  bottom: 16px;
  text-decoration: underline;
  pointer-events: auto;
  z-index: 9999;
}