html, body {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: #0F1314;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  object-fit: contain;
  max-height: 100%;
  max-width: 100%;
  min-width: min(100vw, 100vh);
  min-height: min(100vw, 100vh);
  max-width: min(100vw, 100vh);
  max-height: min(100vw, 100vh);
}