body {
	margin: 0;
	padding: 0;
	width: 100vw;
	height: 100vh;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: #888;
	/* background-image: linear-gradient(to bottom, #888, #656565);*/
	/* background-image: radial-gradient(circle, #2f2f2f, #13161a); */
}

canvas {
	background-color: #888;
	box-shadow: 0px 0px 8px 6px #555;
	/* max-width: 850px;
	max-height: 850px; */
}

.loader {
	font-size: 1.1rem;
	color:#555;
	font-family: arial, tahoma;
}

.loader .prompt {
	font-size: 0.95rem;
	color: #777;
	margin: 5px auto;
	text-align: center;
}

#help_div center {
	padding-top: 3px;
	font-size: 0.98rem;
}

#help_div span {
	font-size: 0.97rem;
	display: inline-block;
	margin: 10px 1px;
}

#help_div #close {
	color: #999;
	font-size: 1.1rem;
	font-weight: bold;
	position: absolute;
	right: 12px;
	top: 11px;
	cursor:	pointer;
	padding: 0px 5px 1px 5px;
	border: 1px solid #777;
	border-radius: 6px;
}

#help_div #close:hover {
	color: #ccc;
	border: 1px solid #999;
}

#help_div small {
	float: right;	
}

#help_div hr {
	margin-top: 15px;
}