.swiper-slicer {
  position: relative;
  perspective: 1200px;
}
.swiper-slicer .swiper {
  perspective: none;
  transform-style: preserve-3d;
}
.swiper-slicer .swiper-slicer-size {
  width: 100%;
  height: auto;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  display: block;
}
.swiper-slicer .swiper-slide {
  background-size: 100% auto;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.swiper-slicer .swiper:nth-child(1) .swiper-wrapper {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 25%;
}
.swiper-slicer .swiper:nth-child(n+2) {
  pointer-events: none;
  position: absolute;
  left: 0;
  width: 100%;
  height: 25%;
}
.swiper-slicer .swiper:nth-child(n+2) .swiper-slide {
  pointer-events: none;
}
.swiper-slicer .swiper:nth-child(2) {
  top: 25%;
}
.swiper-slicer .swiper:nth-child(2) .swiper-slide {
  background-position: 0 -100%;
}
.swiper-slicer .swiper:nth-child(3) {
  top: 50%;
}
.swiper-slicer .swiper:nth-child(3) .swiper-slide {
  background-position: 0 -200%;
}
.swiper-slicer .swiper:nth-child(4) {
  top: 75%;
}
.swiper-slicer .swiper:nth-child(4) .swiper-slide {
  background-position: 0 -300%;
}