.flip-group{perspective:600px}.flip-back,.flip-front{transition:transform .5s cubic-bezier(.4,2,.6,1),opacity .5s cubic-bezier(.4,2,.6,1);backface-visibility:hidden}.flip-front{transform:rotateX(0deg)}.flip-group:hover .flip-front{transform:rotateX(90deg);opacity:0}.flip-back{position:absolute;top:0;left:0;transform:rotateX(-90deg);opacity:0}.flip-group:hover .flip-back{transform:rotateX(0deg);opacity:1}