/*
 * #simple-overlay
 */
#simple-overlay {
	display: none;
	position: fixed;
	top: 0;
	left: 0;
	z-index: 1000;
	width: 100vw;
	height: 100vh;
	background-color: rgba(0,0,0,0.5);
}

#simple-overlay .message {
	display: none;
	position: absolute;
	width: 100%;
	margin: auto;
	color: #fff;
	text-align: center;

	animation: flashing 1.5s infinite;	
}
#simple-overlay .dialog {
	display: none;
	position: absolute;
	right: 0;
	left: 0;
	width: 90vw;
	max-width: 300px;
	margin: auto;
	border: 3px solid #000;
	background-color: #fff;
	text-align: center;
	box-sizing: border-box;
}

#simple-overlay.message .message,
#simple-overlay.dialog .dialog {
	display: block;
}

#simple-overlay .dialog .title {
	display: none;
	padding: 0.5em 1.0em 0 1.0em;
	font-weight: bold;
}
#simple-overlay .dialog .text {
	padding: 0.5em 1.0em;
}

#simple-overlay .dialog .control {
	display: flex;
}
#simple-overlay .dialog button.OK, #simple-overlay .dialog button.Cancel {
	flex: 1;
	padding: 0.5em 1.0em;
	text-align: center;
	cursor: pointer;

	-webkit-appearance: none;
}

/*
 * animation
 */
@keyframes flashing {
	0% {
		opacity: 1;
	}
	66% {
		opacity: 0;
	}
	100% {
		opacity: 1;
	}
}