message: refactor: notice use css var
diff: -@import '@hi-ui/core-css/index.scss';
  @import '../../style/icon/index.scss';
  .hi-notice__container {
  top: 20px;
  right: 20px;
  z-index: 1020;
  - background-color: #fff;
  + background-color: use-color('white');
  .hi-notice {
  padding: 10px 12px;
  margin-bottom: 10px;
  - border: 1px solid #e7e7e7;
  - background: #fff;
  + border: 1px solid use-color('gray-30');
  + background: use-color('white');
  transition: 0.3s ease;
  display: flex;
  align-items: flex-start;
  .hi-notice__content {
  font-size: 12px;
  - color: #666;
  + color: use-color('gray-80');
  }
  .hi-notice-enter {
  