message: fix: cast as HTMLElement
diff: @@ -137,10 +137,10 @@ export const Reader = () => {
  onCssReady({
  docStorageURL,
  onLoading: (dom: Element) => {
  - dom.style.setProperty('opacity', '0');
  + (dom as HTMLElement).style.setProperty('opacity', '0');
  },
  onLoaded: (dom: Element) => {
  - dom.style.removeProperty('opacity');
  + (dom as HTMLElement).style.removeProperty('opacity');
  },
  }),
  ]);
  