canvas {
	background-color: transparent;
	padding: 2px;
}
img {
	max-width: 100%;
	max-height: 100%;
}
#img {
	display: block;
	height: 400px;
	width: 400px;
	overflow: hidden;
	border: 2px solid #000000;
}
#container {
	/* add overlay to canvas grid */
	position: absolute;
	z-index: 1;
}