html,body {
	height: 100%;
}


.layer_board_area {
}

.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;
	top: 50%;
	left: 50%;
	margin: auto;
	-moz-transform:translate(-50%, -50%);
	-webkit-transform:translate(-50%, -50%);
	-o-transform:translate(-50%, -50%);
	-ms-transform:translate(-50%, -50%);
	transform:translate(-50%, -50%);
	
	text-align: center;
	z-index: 2000;
}

@media only screen and (max-width: 640px) {
	.layer_board {
		position: fixed;
		top: 50%;
		left: 0;
		margin: auto 15px;
		-moz-transform:translate(0%, -50%);
		-webkit-transform:translate(0%, -50%);
		-o-transform:translate(0%, -50%);
		-ms-transform:translate(0%, -50%);
		transform:translate(0%, -50%);
		
		text-align: center;
		z-index: 2000;
	}
}
.layer_board a:hover img {
	opacity: 1;
}


.layer_board_btn_close {
	position: absolute;
	top: 0;
	right: 0;
	background: #fff;
}

.layer_board_btn_close a {
	box-sizing: border-box;
	display: block;
	width: 34px;
	height: 34px;
	padding: 0;
	color: #555;
	font-size: 30px;
	line-height: 34px;
}
.layer_board_btn_close a:hover {
	text-decoration: none;
	color: #af282f;
}
/* 
.layer_board_btn_close a:before {
	 content: '\00d7';
	font-size: 32px; 
}
*/