/* ----- css and reveal js ----- */
.animation {
    position: relative;
    opacity: 0;
  }
  
  .animation.active {
    opacity: 1;
  }
  .active.fade-bottom {
    animation: fade-bottom 0.5s ease-in;
  }
  .active.fade-left {
    animation: fade-left 0.5s ease-in;
  }
  .active.fade-right {
    animation: fade-right 0.5s ease-in;
  }
  .active.fade-top {
    animation: fade-top 0.5s ease-in;
  }
  
  @keyframes fade-bottom {
    0% {
      transform: translateY(50px);
      opacity: 0;
    }
    100% {
      transform: translateY(0);
      opacity: 1;
    }
  }
  
  @keyframes fade-top {
    0% {
      transform: translateY(-50px);
      opacity: 0;
    }
    100% {
      transform: translateY(0);
      opacity: 1;
    }
  }
  
  @keyframes fade-left {
    0% {
      transform: translateX(-100px);
      opacity: 0;
    }
    100% {
      transform: translateX(0);
      opacity: 1;
    }
  }
  
  @keyframes fade-right {
    0% {
      transform: translateX(100px);
      opacity: 0;
    }
    100% {
      transform: translateX(0);
      opacity: 1;
    }
  }
  /* ----- css and reveal js ----- */


  .img-zoom:hover img {
    transform: scale(1.2);
  }
  .img-zoom{overflow: hidden;}
  *{
    transition: all 0.5s;
    webkit-transition: all 0.5s;
}

.filp:hover img{transform: rotateY(180deg);}