.htk-popup {
	z-index: 200;
	display: block;
	position: fixed;
	overflow: hidden;
	background-color: white;
	border-radius: 10px;
	box-shadow: 0 0 0.4em rgba(1, 1, 1, 0.6);
	box-sizing: content-box;

	&.modal {
		position: absolute;
		font-size: 1.2em;
		top: 50%;
		left: 50%;
	}
	& > * {
		border-radius: 0.1em;
	}
}
.htk-background {
	position: fixed;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
	z-index: 190;
	background-color: rgba(1, 1, 1, 0.7);
	opacity: 0;
	transition: opacity 200ms ease-in-out;
}