#crossfade > img { 
    width: 100%;
    height: 100%;
    position: absolute; 
    top: 0px;
    left: 0px;
    color: transparent;
    opacity: 0;
    z-index: 0;
    -webkit-backface-visibility: hidden;
    -webkit-animation: imageAnimation 30s linear infinite 0s;
    -moz-animation: imageAnimation 30s linear infinite 0s;
    -o-animation: imageAnimation 30s linear infinite 0s;
    -ms-animation: imageAnimation 30s linear infinite 0s;
    animation: imageAnimation 30s linear infinite 0s; 
}

#crossfade > img:nth-child(2)  {
    -webkit-animation-delay: 10s;
    -moz-animation-delay: 10s;
    -o-animation-delay: 10s;
    -ms-animation-delay: 10s;
    animation-delay: 10s; 
}
#crossfade > img:nth-child(3) {
    -webkit-animation-delay: 20s;
    -moz-animation-delay: 20s;
    -o-animation-delay: 20s;
    -ms-animation-delay: 20s;
    animation-delay: 20s; 
}
#crossfade > img:nth-child(4) {
    -webkit-animation-delay: 30s;
    -moz-animation-delay: 30s;
    -o-animation-delay: 30s;
    -ms-animation-delay: 30s;
    animation-delay: 30s; 
}

@-webkit-keyframes imageAnimation { 
    0% { opacity: 0;
    -webkit-animation-timing-function: ease-in; }
    8% { opacity: 1;
         -webkit-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}

@-moz-keyframes imageAnimation { 
    0% { opacity: 0;
    -moz-animation-timing-function: ease-in; }
    8% { opacity: 1;
         -moz-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}

@-o-keyframes imageAnimation { 
    0% { opacity: 0;
    -o-animation-timing-function: ease-in; }
    8% { opacity: 1;
         -o-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}

@-ms-keyframes imageAnimation { 
    0% { opacity: 0;
    -ms-animation-timing-function: ease-in; }
    8% { opacity: 1;
         -ms-animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}

@keyframes imageAnimation { 
    0% { opacity: 0;
    animation-timing-function: ease-in; }
    8% { opacity: 1;
         animation-timing-function: ease-out; }
    17% { opacity: 1 }
    25% { opacity: 0 }
    100% { opacity: 0 }
}


@keyframes cf4FadeInOut {
    0% {
      opacity:1;
    }
    17% {
      opacity:1;
    }
    25% {
      opacity:0;
    }
    92% {
      opacity:0;
    }
    100% {
      opacity:1;
    }
  }
  
  #cf4a img:nth-of-type(1) {
    animation-delay: 6s;
  }
  #cf4a img:nth-of-type(2) {
    animation-delay: 4s;
  }
  #cf4a img:nth-of-type(3) {
    animation-delay: 2s;
  }
  #cf4a img:nth-of-type(4) {
    animation-delay: 0;
  }