给div css方法加上蒙版

.demo {
    -webkit-mask-image: -webkit-gradient(
      linear,
      0 500,
      0 0,
      from(rgba(0, 0, 0, 0)),
      color-stop(50%, rgba(0, 0, 0, 0)),
      to(rgba(0, 0, 0, 1))
    );
 .anniversary-content-wrapper.demo {
    pointer-events: none;
    .intro-info{
      margin-bottom: 9px;
    }
  }