html,body {
	height: 100%;
}


* html .layer_board_bg,
* html .layer_board {
	position: absolute;
}

.layer_board_bg {
	position: fixed;
	width: 100%;
	height: 100%;
	
	z-index: 90999;
	
	top: 0;
	left: 0;
	
	display: none;
	cursor: pointer;
	background: #000;
}

.layer_board {
	display: none;
	position: fixed;
	top: 50%;
	left: 50%;
	transform: translateY(-50%) translateX(-50%);
	text-align: center;
	z-index: 100000;
	max-width: 591px;
	width: 95%;
}
.layer_board .btn_close{
	width: 60px;
	height: 60px;
	position: fixed;
	top: -20px;
	right: -20px;
}

@media only screen and (max-width: 767px) {
	.layer_board .btn_close{
	width: 50px;
	height: 50px;
	position: fixed;
	top: -10px;
	right: -10px;
}
}