.animation-element {
  opacity: 0;
  position: relative;
}
.animation-element.slide-left, .animation-element.slide-right, .animation-element.slide-up, .animation-element.slide-down {
  opacity: 0;
  -webkit-transition: all 1s linear;
  -moz-transition: all 1s linear;
  -ms-transition: all 1s linear;
  -o-transition: all 1s linear;
  transition: all 1s linear;
}
.animation-element.slide-left {
  -webkit-transform: translate3d(-200px, 0px, 0px);
  -moz-transform: translate3d(-200px, 0px, 0px);
  -ms-transform: translate(-200px, 0px);
  -o-transform: translate(-200px, 0px);
  transform: translate3d(-200px, 0px, 0px);
}
.animation-element.slide-right {
  -webkit-transform: translate3d(200px, 0px, 0px);
  -moz-transform: translate3d(200px, 0px, 0px);
  -ms-transform: translate(200px, 0px);
  -o-transform: translate(200px, 0px);
  transform: translate3d(200px, 0px, 0px);
}
.animation-element.slide-left.in-view, .animation-element.slide-right.in-view, .animation-element.bounce-up.in-view, .animation-element.bounce-down.in-view{
  opacity: 1;
  -webkit-transform: translate3d(0px, 0px, 0px);
  -moz-transform: translate3d(0px, 0px, 0px);
  -ms-transform: translate(0px, 0px);
  -o-transform: translate(0px, 0px);
  transform: translate3d(0px, 0px, 0px);
}
.animation-element.bounce-up, .animation-element.bounce-down {
  opacity: 0;
  -webkit-transition: all 500ms ease-out;
  -moz-transition: all 500ms ease-out;
  -ms-transition: all 500ms ease-out;
  -o-transition: all 500ms ease-out;
  transition: all 500ms ease-out;
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  -ms-backface-visibility: hidden;
  -o-backface-visibility: hidden;
  backface-visibility: hidden;
}
.animation-element.bounce-up {
  -webkit-transform: translate3d(0px, 200px, 0px);
  -moz-transform: translate3d(0px, 200px, 0px);
  -o-transform: translate(0px, 200px);
  -ms-transform: translate(0px, 200px);
  transform: translate3d(0px, 200, 0px);
}
.animation-element.bounce-down {
  -webkit-transform: translate3d(0px, -200px, 0px);
  -moz-transform: translate3d(0px, -200px, 0px);
  -o-transform: translate(0px, -200px);
  -ms-transform: translate(0px, -200px);
  transform: translate3d(0px, -200, 0px);
}