#hiroshi-run-area {
  width: 100%;
  line-height: 0;
}
#hiroshi-run-wrapper {
  background: #000;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}
#hiroshi-run-wrapper canvas {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
  touch-action: none;
}