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;
	text-align: center;
	z-index: 2000;
	color: #fff;
	font-size: 14px;
	line-height: 1.8;
	top: 50%;
	left: 50%;
	-webkit-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);
}
.layer_board img {
	margin: 10px;
	width: 100px;
	height: auto;
}
.layer_board img.small {
	width: 200px;
	height: auto;
}

@media (max-width : 480px) {
.layer_board {
	width: 90%;
	margin-top: 50px;
}
.layer_board img.small {
	width: 40%;
	height: auto;
	margin-top: 0px;
}
.layer_board p.text {
	line-height: 1.2;
}
}
@media (min-width:481px) and (max-width:800px) {
.layer_board {
	width: 90%;
	margin-top: 0px;
}
.layer_board img.small {
	width: 200px;
	height: auto;
}

}