body, html {
	height: 100%;
	margin: 0;
	padding: 0;
	overflow: hidden;
}

.canvas-container {
	position: absolute;
	left: 0px;
	top: 0px;
}

canvas {
	position: absolute;
	left: 0px;
	top: 0px;
	width: 100vw;
	height: 100vh;
}

#canvas {
	z-index: 0;
}

#grid_canvas {
	z-index: 1;
	pointer-events: none;
}

.menu {
	position: absolute;
	left: 0px;
	top: 0px;
	margin: 10px;
	padding: 10px;
	background: #334;
	color: #fff;
	z-index: 10;
}


#source_text {
	width: 300px;
	height: 500px;
}