html,body {
	height: 100%;
}


* html .layer_board_bg,
* html .layer_board {
	position: absolute;
}

.layer_board_bg {
	position: fixed;
	width: 100%;
	height: 100%;
	
	z-index: 1000;
	
	top: 0;
	left: 0;
	
	display: none;
	cursor: pointer;
	background: #000;
}

.layer_board {
	display: none;
    position: absolute;
    left: 50%;
    top: 45%;
    transform: translate(-50%, -50%);	text-align: center;
	z-index: 2000;
	width:70%
}


.layer_board:before {
	content: "CLOSE";
	position: absolute;
	bottom: -15%;
	right: 50%;
	margin: 0 -30px 0 0;
	font-size: 1.3rem;
	font-weight: bold;
	color: #ffffff;
}