body
{
  margin: 0;
  padding: 0;	
  background-color: #fff;
  /* background-color: #fcfcfc; */
}

.center-div {
  position: absolute;
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 444px;
  height: 444px;
  background-color: #fff;
  /* border-radius: 3px; */
}

/* body {
  margin: 0;
  padding: 0;
} */

#cScontain {
  display: flex;
  justify-content: center;
  align-items: center;
}

#cf4a {
  position:relative;
  width: 100%;
  height: 100%;
  padding: 0px;
}

#cf4a img {
  display: block;
  margin: auto;
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  right: 0;
  -webkit-transition: opacity 1s ease-in-out;
  -moz-transition: opacity 1s ease-in-out;
  -o-transition: opacity 1s ease-in-out;
  transition: opacity 1s ease-in-out;
}

@keyframes cf4FadeInOut {
  0% {
  opacity:1;
  }
  45% {
  opacity:1;
  }
  55% {
  opacity:0;
  }
  100% {
  opacity:0;
  }
}

#cf4a img {
  animation-name: cf4FadeInOut;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-duration: 10s;
  animation-direction: alternate;
}

/* @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: 5s;
}
#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;
}