body {
	margin: 0;
	padding: 0;
}

.flex-container {
	position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
	display: flex;
	align-items: center;
	justify-content: center;
}

.flex-container > .flex-item {
	max-width: 95%;
	max-height: 95%;
}

canvas {
	border: 2px dotted #d8d8d8;
}