classroom-app/src/components/m-sticky/index.module.less

.sticky {
  position: sticky;
  top: 0;
  z-index: 99;
}

.white {
  background-color: #fff;
  > div {
    padding-top: 15px;
    box-shadow: 0px 0px 10px 0px rgba(216, 216, 216, 0.5);
  }
}