.carousel {
  overflow: hidden;
  position: relative;
  width: 100%;
  /* 确保容器宽度占满 */
  height: 100%;
  /* 确保容器高度占满 */
}
.carousel-item {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}