@keyframes hoja-adelante{0%{transform:rotateY(0)}to{transform:rotateY(-180deg)}}@keyframes hoja-atras{0%{transform:rotateY(0)}to{transform:rotateY(180deg)}}.hoja-adelante{animation:.72s cubic-bezier(.45,.05,.25,1) both hoja-adelante}.hoja-atras{animation:.72s cubic-bezier(.45,.05,.25,1) both hoja-atras}