.height {
  height: 50px;
}

.containerAffix {
  height: 100px;
  overflow-y: scroll;
  background: url(https://static-btri.midea.com/mfs/2790/1661741068513.jpg);
  & > div {
    padding-top: 60px;
    height: 300px;
  }
}

.basicContainer {
  .ant-affix,
  .ant-btri-btn-box {
    z-index: 999;
  }
}