animate.css/source/rotating_entrances/rotateInDownRight.css

@keyframes rotateInDownRight {
	0% {
		transform-origin: right bottom;
		transform: rotate(90deg);
		opacity: 0;
	}

	100% {
		transform-origin: right bottom;
		transform: rotate(0);
		opacity: 1;
	}
}

.rotateInDownRight {
	animation-name: rotateInDownRight;
}