body {
	-webkit-user-select: none;
	-webkit-tap-highlight-color: transparent;
}
img {
	image-rendering: optimizeSpeed;
	image-rendering: -moz-crisp-edges;
	image-rendering: -o-crisp-edges;
	image-rendering: -webkit-optimize-contrast;
	image-rendering: pixelated;
	image-rendering: optimize-contrast;
	-ms-interpolation-mode: nearest-neighbor;
}
div {
	display: flex;
	justify-content: center;
}
canvas {
	border: 1px solid black;
	image-rendering: optimizeSpeed;
	image-rendering: -moz-crisp-edges;
	image-rendering: -o-crisp-edges;
	image-rendering: -webkit-optimize-contrast;
	image-rendering: pixelated;
	image-rendering: optimize-contrast;
	-ms-interpolation-mode: nearest-neighbor;
	width: 360px;
	height: 360px;
    display: block;
    margin: 0 auto;
}
button {
	background-color: lightgray;
	padding: 3pt;
	margin: 3pt;
}
button:active {
	background-color: gray;
}
span {
	font-size: 16pt;
}