Yes, this will be possible. If you could send me a link to your page and describe which element you want to hide before animating I can advise you specifically.
For now, I can say that if you have chosen one of the entrance animations e.g. bounceIn, you can achieve this effect by setting opacity to 0 (via the Behaviour property group), and also set animation-fill-mode to forwards. That will hide the element by default, but allow the final styles of the animation to stick after it finishes (the entrance animations apply opacity:1 so the element will stay visible).
If you have chosen a non-entrance animation, you may require a different approach.