* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #111;
  font-family: monospace;
  cursor: none;
}

canvas {
  display: block;
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  aspect-ratio: 256 / 231;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border: 2px solid #333;
  cursor: none;
}