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

.layer_board_bg {
	position: fixed;
	width: 100%;
	height: 100%;
	z-index: 20000;
	top: 0;
	left: 0;
	display: none;
	cursor: pointer;
	background-color: #000;
	backdrop-filter: blur(10px);
}

.layer_board {
	display: none;
	position: fixed;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	z-index: 20010;
	max-width: 880px;
	width: 90%;
}