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 {
	width: 75%;
	max-width: 720px;
	display: none;
	position: fixed;
	left: 60%;
	margin: 50px 0px 0px -40%;
	height: 90%;
	overflow: auto;
	
	text-align: center;
	z-index: 2000;
}

@media screen and (max-width: 960px) {

.layer_board {
	width: 90%;
	display: none;
	position: fixed;
	left: 5%;
	margin: 10px 0px 0px 0;
	height: 70%;
	overflow: auto;
	
	text-align: center;
	z-index: 2000;
}
	
}