Image Slider in Pure CSS

fiddle.css

section{
  width: 200px;
  height: 200px;
  position: relative;
  left: 50%;
  top: 1em;
  margin-left: -100px;
  overflow: hidden;
  background: #292929;
  border: 10px solid #fff;
}

/*section:hover article{
  animation-play-state: paused;
}*/

article{
  position: absolute;
  left: 200px;
  background: #292929;
  color: #e3e3e3;
  width: 200px;
  height: 200px;
  text-align: center;
  font: 2em/1em sans-serif;
  border-box: box-sizing;
  padding-top: 80px;
}

article:nth-of-type(1){
  animation: slideIn 50s linear 0s infinite;
}
article:nth-of-type(2){
  animation: slideIn 50s linear 5s infinite;
}
article:nth-of-type(3){
  animation: slideIn 50s linear 10s infinite;
}

@keyframes slideIn{
  0% {left: 200px;}
  1% {left: 0;}
  10% {left: 0;}
  11% {left: -200px;}
  100%{left: -200px;}
}

fiddle.html

<section>
  <article>Slide 1</article>
  <article>Slide 2</article>
  <article>Slide 3</article>
</section>