html, body {
  margin: 0;
  height: 100%;
  background: #000;
  overflow: hidden;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: grab;
}

canvas.dragging {
  cursor: grabbing;
}

#error {
  position: fixed;
  top: 50%;
  left: 0;
  right: 0;
  margin: 0;
  text-align: center;
  font: 12px/1.2 system-ui, sans-serif;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgb(140 170 230 / .7);
}