anchor.diff:    .rs-flip02
       .rs-front, .rs-back
         -webkit-backface-visibility: hidden
  +      backface-visibility: hidden
       .rs-back
         -webkit-transform: rotate3d(1, 0, 0, -180deg)
  +      transform: rotate3d(1, 0, 0, -180deg)
       &.rs-show .rs-card
         -webkit-animation: flip02 1s ease-in-out forwards
         -webkit-transform-origin: 50% 0%
  +      animation: flip02 1s ease-in-out forwards
  +      transform-origin: 50% 0%
   
   @-webkit-keyframes flip02
     0%
  
positive.code:   100%
      -webkit-transform: rotate3d(1, 0, 0, -180deg)
  
  @-moz-keyframes rs-flip01
    0%
      -moz-transition: rotate3d(1, 0, 0, 0deg)
    100%
      -moz-transition: rotate3d(1, 0, 0, -180deg)
  
  @keyframes rs-flip01
    0%
      transition: rotate3d(1, 0, 0, 0deg)
    100%
      transition: rotate3d(1, 0, 0, -180deg)
  
  /* ********************** Flip 02 ********************** */
  
  
negative.code:     position: absolute
    .rs-card, .rs-cover, .rs-transition
      -webkit-transform-style: preserve-3d
      transform-style: preserve-3d
  
  /* ********************** ********************** ************ ********************** ********************** */
  