body {
  margin: 0;
  overflow: hidden;
  background: #000;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hint {
  position: absolute;
  bottom: 16px;
  width: 100%;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-family: sans-serif;
  font-size: 14px;
  z-index: 1;
  pointer-events: none;
}