/* 瀑布流部分 */
.waterfall {
  position: relative;
}

.waterfall .item {
  /* 采用绝对定位，由js控制位置 */
  position: absolute;
  width: 20%;
  display: block;
  font-size: 0;
  padding: 0 5px;
  margin: 5px 0;
  border-radius: 8px;
  animation: fadeIn, toTop 0.6s;
  cursor: zoom-in;
}

@media (max-width: 767px) {
  .waterfall .item {
    width: 25%;
    padding: 0 3px;
    margin: 3px 0;
  }
}

@media (max-width: 480px) {
  .waterfall .item {
    width: 33.333333%;
  }
}

.waterfall .item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 1px 1px 6px #ccc;
}