.gallery, .gallery2, .gallery3 {
  position: relative;
  aspect-ratio: 5/2;
  overflow: hidden;
}
.gallery3 img:nth-child(3) {
  z-index: 1;
  animation-delay: 8s;
}
.gallery3 img:nth-child(2) {
  z-index: 2;
  animation-delay: 4s;
}
.gallery3 img {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 3;
  animation: slideshow 12s linear 0s infinite;
  width: 100%;
}
.gallery2 img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}
.top {
  animation-name: fade;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-duration: 4s;
  animation-direction: alternate;
}
@keyframes fade {
  0% {
    opacity: 1;
  }
  25% {
    opacity: 1;
  }
  75% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes slideshow {
  25% {
    opacity: 1;
  }
  33.33% {
    opacity: 0;
  }
  91.66% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}