.fade {
	transition: opacity .15s linear;

	&:not(.show) {
		opacity: 0;
	}
}

.collapse {
	&:not(.show) {
		display: none;
	}
}

.collapsing {
	height: 0;
	overflow: hidden;
	transition: height .35s ease;

	&.collapse-horizontal {
		width: 0;
		height: auto;
		transition: width .35s ease;
	}
}