.banner-container-class {
  width: 100vw;
  overflow: hidden ;
  position: relative;
  margin: 0 auto;
  /* 居中布局 */
}

.banners {
  display: flex;
  width: 400%;
  gap: 0;
  animation: slide 15s infinite;
  -webkit-animation: slide 15s infinite;
}

.banner {
  flex: 0 0 25%;
}

.banner img {
  width: 100vw;
  height: auto;
  display: block;
}

@keyframes slide {

  0%,21.25% {
    transform: translateX(0%);
  }

  25%,46.25% {
    transform: translateX(-25%)  ;
    -webkit-transform: translateX(-25%)  ;
    -moz-transform: translateX(-25%)  ;
    -ms-transform: translateX(-25%)  ;
    -o-transform: translateX(-25%)  ;
}

  50%,71.25% {
    transform: translateX(-50%);
}

75%,96.25% {
  transform: translateX(-75%);
  -webkit-transform: translateX(-75%);
  -moz-transform: translateX(-75%);
  -ms-transform: translateX(-75%);
  -o-transform: translateX(-75%);
}

100% {
    /* 回到第一张 */
    transform: translateX(0%);
}
}