ul{
  position: relative;
  overflow: hidden;
}
ul li.slide{
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  opacity: 0;
}
ul li.dummy{
  opacity: 0;
}
.anim{
  animation-name: kf_anim;
  animation-duration: 2s;
  animation-timing-function: linear;
  animation-iteration-count: 1;
  animation-fill-mode: forwards;
}
@keyframes kf_anim {
    0%{ opacity: 1; }
  100%{ opacity: 0; }
}