.flappy-canvas {
  width: min(420px, 100%);
  height: auto;
  aspect-ratio: 420 / 560;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--canvas-night);
  box-shadow: var(--shadow-md);
  touch-action: manipulation;
  cursor: pointer;
}