html {
	overflow: hidden;
	touch-action: none;
	content-zooming: none;
}
body {
	position: absolute;
	margin: 0;
	padding: 0;
	width: 100%;
	height: 100%;
	background-color: blue;
}
canvas {
	width: 100%; 
	height: 100%;
	background-color: blue;
	position: absolute;
}