igna.rocks/assets/js/scss/effects/icons/_icon-wobble-vertical.scss

/* Icon Wobble Vertical */
@include keyframes(#{$nameSpace}-icon-wobble-vertical) {
	16.65% {
		@include prefixed(transform, translateY(6px));
	}

	33.3% {
		@include prefixed(transform, translateY(-5px));
	}

	49.95% {
		@include prefixed(transform, translateY(4px));
	}

	66.6% {
		@include prefixed(transform, translateY(-2px));
	}

	83.25% {
		@include prefixed(transform, translateY(1px));
	}

	100% {
		@include prefixed(transform, translateY(0));
	}
}

@mixin icon-wobble-vertical {
	@include hacks();
	@include prefixed(transition-duration, $mediumDuration);

	.hvr-icon {
		@include prefixed(transform, translateZ(0));
	}

	&:hover,
	&:focus,
	&:active {

		.hvr-icon {
			@include prefixed(animation-name, #{$nameSpace}-icon-wobble-vertical);
			@include prefixed(animation-duration, 1s);
			@include prefixed(animation-timing-function, ease-in-out);
			@include prefixed(animation-iteration-count, 1);
		}
	}
}