.flip-card{perspective:1000px}.flip-inner{position:relative;width:100%;height:100%;transition:transform .6s;transform-style:preserve-3d}.flip-card:hover .flip-inner{transform:rotateY(180deg)}.flip-back,.flip-front{backface-visibility:hidden;position:absolute;top:0;left:0}.flip-front{z-index:2}.flip-back{transform:rotateY(180deg)}