* 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: #a6daff;
}

.layer_board {
	display: none;
	position: fixed;
	left: 50%;
	margin: 80px 0px 0px -300px;
	text-align: center;
	z-index: 2000;
}

.layer_board img {
	opacity: 0;
}

.layer_board img:nth-child(1) {
  -webkit-animation: example 0.5s ease 0.5s 1 forwards;
  animation: example 0.5s ease 0.5s 1 forwards;
}

@-webkit-keyframes example {
  100% {
    opacity: 1;
  }
}

@keyframes example {
  100% {
    opacity: 1;
  }
}

.btn_close {
	margin-top: 10px;
	cursor:pointer;
}