.hex-stage {
  position: relative;
  aspect-ratio: 5 / 4;
  background: #081628;
}

.hex-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

@media (max-width: 640px) {
  .hex-stage {
    aspect-ratio: 4 / 5;
  }
}