<style>
@-webkit-keyframes cf3FadeInOut {
  0% {
    opacity:1;
  }
  25% {
    opacity:1;
  }
  75% {
    opacity:0;
  }
  100% {
    opacity:0;
  }
}

@-moz-keyframes cf3FadeInOut {
  0% {
    opacity:1;
  }
  25% {
    opacity:1;
  }
  75% {
    opacity:0;
  }
  100% {
    opacity:0;
  }
}

@-o-keyframes cf3FadeInOut {
  0% {
    opacity:1;
  }
  25% {
    opacity:1;
  }
  75% {
    opacity:0;
  }
  100% {
    opacity:0;
  }
}

@keyframes cf3FadeInOut {
  0% {
    opacity:1;
  }
  25% {
    opacity:1;
  }
  75% {
    opacity:0;
  }
  100% {
    opacity:0;
  }
}

#cf3 {
  position:relative;
  height:140px;
  width:100%;
  margin:0 auto;
}
#cf3 img {
  position:absolute;
  left:0;
}

#cf3 img.top {
  -webkit-animation-name: cf3FadeInOut;
  -webkit-animation-timing-function: ease-in-out;
  -webkit-animation-iteration-count: infinite;
  -webkit-animation-duration: 10s;
  -webkit-animation-direction: alternate;

  -moz-animation-name: cf3FadeInOut;
  -moz-animation-timing-function: ease-in-out;
  -moz-animation-iteration-count: infinite;
  -moz-animation-duration: 10s;
  -moz-animation-direction: alternate;

  -o-animation-name: cf3FadeInOut;
  -o-animation-timing-function: ease-in-out;
  -o-animation-iteration-count: infinite;
  -o-animation-duration: 10s;
  -o-animation-direction: alternate;

  animation-name: cf3FadeInOut;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-duration: 10s;
  animation-direction: alternate;
}

</style>