/* Reset default styles */
* {
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;  /* horizontally center canvas */
  align-items: center;      /* vertically center canvas */
  background-color: #676767; /* light gray background */
  font-family: 'Press Start 2P', monospace;
  overflow: hidden;
}

canvas {
  display: block;
  image-rendering: pixelated; /* pixel-art style */
}