html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #11131c;
  font-family: system-ui, Segoe UI, Arial, sans-serif;
}

#game-root {
  width: 100vw;
  height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, #26364d 0%, #11131c 58%, #07080c 100%);
}

canvas.blockbound-canvas {
  width: min(100vw, calc(100vh * 16 / 9));
  height: min(100vh, calc(100vw * 9 / 16));
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #87b8eb;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}