current

.current {
  display: block !important;
  z-index: 980 !important;
}

page

.page {
  display: none;
  height: auto !important;
  min-height: 100% !important;
  padding-left: 20px;
  position: absolute; left: 0; top: 0;

    /*-webkit-transform-style: preserve-3d;*/

     -moz-transition: all 0.3s ease-in-out;
       -o-transition: all 0.3s ease-in-out;
  -webkit-transition: all 0.3s ease-in-out;
      -ms-transition: all 0.3s ease-in-out;
          transition: all 0.3s ease-in-out;
}

past

.past {
    opacity: 0;
  display:block;
     -moz-transform: scale(0.5);
       -o-transform: scale(0.5);
  -webkit-transform: scale(0.5);
      -ms-transform: translateX(-100%, 0, 0);
          transform: scale(0.5);
}