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;
	top: 0;
	left: 0;
	margin: 10%;
	
	text-align: center;
	z-index: 2000;
}
.layer_board img{
	max-width: 100%;
	max-height: 100%;
	margin: auto;
} 

.btn_close{
	font-size: 1em;
	background: #000000;
	color: #FFFFFF !important;
	display: block;
	padding: 2%;
	text-align: center;
}


@media only screen and (min-width: 500px){
	.layer_board img{
	width: 50%;
	}
	.btn_close{
		width: 46%;
		margin: 0 auto;
	}
}