img{
position: relative;
width:20%;
height:100%;	
border:2px solid #FFFFFF;
}



@keyframes slidy {
0% { left: 0%; }
30% { left: 0%; }

35% { left: -100%; }
60% { left: -100%; }

65% { left: -200%; }
100% { left: -200%; }
}

body { margin: 0; } 
div#slider { overflow: hidden; }
div#slider figure img { width: 20%; float: left; }
div#slider figure { 
  position: relative;
  width: 500%;
  margin: 0;
  left: 0;
  text-align: left;
  font-size: 0;
  animation: 20s slidy infinite alternate; 
}