.slide {
  position: relative;
  width: 100%;
  height: 246px;
  overflow: hidden;
}
 
@keyframes slideshow{
  0%{
    opacity: 0;
  }
  10%{
    opacity: 1;
  }
  20%{
    opacity: 1
  }
  30%{
    opacity: 0;
  }
  100%{
    opacity: 0;
  }
}
 
.slide img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: auto;
  opacity: 0;
  animation :slideshow 24s linear infinite;
}
 
.slide img:nth-child(1){
  animation-delay: 0s;
}

.slide img:nth-child(2){
  animation-delay: 6s;
}

.slide img:nth-child(3){
  animation-delay: 12s;
}
 
.slide img:last-child{
  animation-delay: 18s;
}