.swiper {
    width: 100%;
    height: 800px;
  }

  .swiper-slide {
  display: flex;
  justify-content: center;
  align-items: center; 
  text-align: center; 
  font-size: 18px;
  background-size: cover;
  background-position: center;
}

.swiper-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.swiper-slide {
  text-align: center;
  font-size: 18px;
  background-size: cover;
  background-position: center;
}
.slide-1 {
  background-image: url('images/bg1.jpg');
}
.slide-2 {
  background-image: url('images/bg2.jpg');
}
.slide-3 {
  background-image: url('images/bg3.jpg');
}
.slide-3 {
  background-image: url('images/bg3.jpg');
}
.slide-3 {
  background-image: url('images/bg3.jpg');
}

.swiper-slide .slide-4{
  background-color: green;
}