body {
	background: linear-gradient(navy, teal);
	color: #fff;

	/* Allow mouse dragging. */
	-moz-user-select: none;
	-ms-user-select: none;
	-o-user-select: none;
	-webkit-user-select: none;
	user-select: none;
	
	/* disable touch panning/zooming */
	-ms-touch-action: none;
	touch-action: none;

	/* Allow canvas to hit the edges of the browser viewport. */
	margin: 0;
	overflow-y:hidden;
}

#screen canvas {
	margin: auto;
	/* Hide the gap for font descenders. */
	display: block;
	/* disable scaling interpolation */
    
	image-rendering: pixelated;
    image-rendering: crisp-edges; /* does not seem to work */
    background: black;
    box-shadow: 0 0 5vmin 1vmin black;
}

#block_land_true{
	position:absolute;
	top:0;
	left:0;
	text-align:center;
	background-color: #000000;
	width:100%;
	height:100%;
	display:none;
	font-size:30px;
	font-family: sans-serif;
	text-transform:uppercase;
}

#block_land_false{
	position:absolute;
	top:0;
	left:0;
	text-align:center;
	background-color: #000000;
	width:100%;
	height:100%;
	display:none;
	font-size:30px;
	font-family: sans-serif;
	text-transform:uppercase;
}

#ads{
	z-index:-999;
	display:none;
	position:absolute;
	left:0;
	width:100%;
	height:auto;
	margin:0;
	padding:0;
	text-align:center;
}

#preview{
	display:none;
}