message: refactor: notification use css var
diff: @@ -49,13 +49,13 @@ $color-map: (
  }
  .hi-notification__header {
  - height: 22px;
  - line-height: 22px;
  + height: $line-height-size-normal;
  + line-height: $line-height-size-normal;
  display: flex;
  align-items: center;
  .hi-notification__title {
  - font-size: 14px;
  + font-size: $font-size-normal;
  }
  }
  @@ -68,9 +68,9 @@ $color-map: (
  .hi-notification__content {
  padding: 0 24px;
  margin-top: 4px;
  - font-size: 12px;
  + font-size: $font-size-small;
  line-height: 20px;
  - color: #666;
  + color: use-color('gray-80');
  }
  .hi-notification__content--wrapper {
  