html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background-color: #ffd6e8;
  /* tiny pixel hearts pattern */
  background-image:
    radial-gradient(#ffb4d6 2px, transparent 2.5px),
    radial-gradient(#ffc6e0 2px, transparent 2.5px);
  background-size: 32px 32px;
  background-position: 0 0, 16px 16px;
}
#game {
  position: fixed;
  inset: 16px;
}
#game canvas {
  border-radius: 18px;
  box-shadow: 0 0 0 6px #ff5aae, 0 0 0 12px #fff, 0 12px 40px rgba(122, 59, 94, 0.35);
  image-rendering: pixelated;
}