html, body {
    padding: 0;
    margin: 0;
}

main {
	text-align: center;
	width: 100%;
}

canvas {
	object-fit: contain;
  position: absolute;
  max-height: 100%;
  max-width: 100%;
	min-height: 100%;
  min-width: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}