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: 3% 0px 0px -285px;
	z-index: 2000;
	top: 0;
	text-align: center;
}
.btn_close{
	margin-top: 10px;
}

@media screen and (max-width: 768px) {
	.layer_board {
	    left: 0;
	    padding: 5%;
	    width: 100%;
	    box-sizing: border-box;
        margin: 0;
	}
	.layer_img img{
		width: 100%;
	}
}