body {
	margin: 0;
	padding: 0;
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100vh;
	padding-bottom: calc(env(safe-area-inset-bottom) + 20px);
}

canvas {
	border: 1px solid black;
	touch-action: manipulation;
}

.dark {
	background-color: #222;
	color: #eee;
}

#reset-btn {
	position: fixed;
	bottom: 20px;
	left: 20px;
}

#toggle-btn {
	position: fixed;
	bottom: 20px;
	right: 20px;
}

#toggle-btn,
#reset-btn {
	font-size: 1.5rem;
	padding: 0.5rem;
	color: #fff;
	background-color: #333;
}