Clean up "Hacked" CSS

There was no need to over complicate the 'hacked' CSS to use the
bounce.js library.

By simply hiding the div to begin, then showing it on mouse over you
will get the desired effect without the "jitter" that is a pain in the
video!

Timing, etc. can be adjusted as needed to get the desired effect, but this leaves the CSS far cleaner which is a definite plus! 
As long as the animation isn't "bounceOut", hide the overflow.

Bounce-Out has the overflow removed to give it more "pop"! 
It is definitely possible to achieve this in other ways (i.e. add an additional sass block which styles the holder independently or by using funky modifiers to get to this div within the animation file; but this was easier!