.swiper-container {
   margin: 0 auto;
   background-color: #000;
}

.infinite-slider .swiper-wrapper {
  transition-timing-function: linear;
}

.infinite-slider .swiper-slide {
  height: 100% ; /* 高さを指定 */
  width: auto;
}

.infinite-slider .swiper-slide img {
  width: 100%;
  height: auto;
}
.swiper-wrapper {
   width: 100%;
   height: auto;
   transition-timing-function: linear;
}

.swiper-slide {
  color: #ffffff;
  width: 100%;
  height: auto;
  text-align: center;
 }

.swiper-slide:nth-child(3n + 1) {
  background-color: #000;
}

.swiper-slide:nth-child(3n + 2) {
  background-color: #000;
}

.swiper-slide:nth-child(3n + 3) {
  background-color: #000;
}