@keyframes cf4FadeInOut {
  0% {
    opacity:1;
  }
  17% {
    opacity:1;
  }
  25% {
    opacity:0;
  }
  92% {
    opacity:0;
  }
  100% {
    opacity:1;
  }
}

#cf4a {
  position:relative;
  height:auto;
  width:inherit;
  margin:0 auto;
}

#cf4a img {
  position:absolute;
  bottom:28px;
  top:-10px;
  left:26px;
  animation-name: cf4FadeInOut;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-duration:28s;

}

#cf4a img:nth-of-type(1) {
  animation-delay: 20s;
}
#cf4a img:nth-of-type(2) {
  animation-delay: 16s;
}
#cf4a img:nth-of-type(3) {
  animation-delay: 12s;
}
#cf4a img:nth-of-type(4) {
  animation-delay: 8s;
}
#cf4a img:nth-of-type(5) {
  animation-delay: 4s;
}
#cf4a img:nth-of-type(6) {
  animation-delay: 0s;
}