html,
body {
	margin: 0;
	width: 100%;
	min-height: 100%;
	background: #3b7f5e;
	overflow: hidden;
	touch-action: manipulation;
}

body {
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: Arial, sans-serif;
}

canvas {
	display: block;
	max-width: 100vw;
	max-height: 100vh;
	object-fit: contain;
	box-shadow: 0 18px 60px rgba(20, 48, 32, 0.34);
}