html, body {
  margin: 0;
  padding: 0;
  background: #000;
  height: 100%;
  overflow: hidden;
}
body {
  display: grid;
  place-items: center;
}
canvas {
  display: block;
  image-rendering: pixelated;
  width: 100vw;
  height: 100vh;
  width: 100dvw;
  height: 100dvh;
  object-fit: contain;
}