webpack-bootstrap-ui-kit/src/scss/_animations.scss

// pulse

@keyframes pulse {
	0% {
		transform: scale(1);
	}

	50% {
		transform: scale(0.8);
	}

	100% {
		transform: scale(1);
	}
}

@keyframes fade {
	0% {
		opacity: 1;
		filter: grayscale(0);
	}

	50% {
		opacity: 0.5;
		filter: grayscale(1);
	}

	100% {
		opacity: 1;
		filter: grayscale(0);
	}
}

@keyframes expand {
	from {
		max-height: 0;
		overflow: hidden;
	}
	to {
		max-height: 500rem;
		max-height: 200vh;
		overflow: visible;
	}
}