.swiper-container {
  width: 100% !important;
  height: 100vh !important; /* либо нужная вам высота */
  overflow: visible !important;
}

.swiper-wrapper {
  width: 100% !important;
  height: 100% !important;
}

.swiper-slide {
  width: 100% !important;
  height: 100% !important;
  display: flex !important;
  justify-content: center;
  align-items: center;
  overflow: visible !important;
}