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: 30px 0px 0px -330px;
	padding: 15px;
	background: #eeeeee;
	z-index: 2000;
}

/* 表示領域が677px以下 */
@media screen and (max-width: 677px) {
	.layer_board {
		width: 90%;
		height: 90%;
		padding: 2%;
		margin: 3% auto;
		position: relative;
		left: auto;
	}
}