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: -90px 0px 0px -250px;
	/*元々は-50,0,0,-285です(2020年新歓用にて変更)*/
	text-align: center;
	z-index: 2000;
}