*, *::before, *::after {
	box-sizing: border-box;
}

html {
	height: 100%;
}

body {
	display: grid;
	align-content: center;
	justify-content: center;
	min-height: 100%;
	margin: 0;
    background-color: #212529;
}

canvas {
	border: 1px solid #868e96;
	max-width: calc(100vw - 40px);
	max-height: calc(100vh - 40px);
}