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: fixed;
	left: 50%;
	margin: 50px 0px 0px -285px;
	
	text-align: center;
	z-index: 2000;
}


@media screen and (max-width: 580px) {
	.layer_board {
		display: none;
		left: 0;
		position: relative;
		margin: 50px 10px 0;
		text-align: center;
		z-index: 2000;
	}
}