Smoothing rotation of album

[qligier]

This helps to smooth the rotated album on hover.

Preview in Chrome (left is before, right is after):

Preview in Firefox (left is before, right is after):

[electerious]

Chrome creates a new composited layer around the image when using backface-visibility: hidden. It's the same when using will-change: transform. I can't see any difference in Firefox. Adding the CSS doesn't change anything for me, but adding will-change: transform does. Using this for all images (and not only on :hover) has a negative performance impact for big albums. Using it for :hover only is a good idea, as it only effect one album at a time. All browsers are creating a composited layer around the image during the animation/transition. The border looks good and gets worse when the browser removes the composited layer. Keeping it fixes the problem.

Lets simply use will-change: transform on :hover! :) Will add it manually. Thanks for the idea.

[qligier]

There is a difference in Firefox but much less than in Chrome (you see it at the end of the rotation, when the composited layer is deleted).
will-change: transform has the same effect as backface-visibility: hidden and transform-style: preserve-3d; in Chrome and Firefox from what I see.