html,
body {
	margin: 0;
	padding: 0;
	width: 100vw;
	height: 100vh;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
  	touch-action: none;
  	background: #333;
},
canvas {
   display: inline;
   max-width: 100%;
   max-height: 100%;
}