BUG

1. web Object parse failed. (Fixed)
2. console.log can't print on npm run dev. : due to the @babel/plugin-proposal-class-properties plugin.
3. fast refresh not working. : due to the @babel/plugin-proposal-class-properties plugin.
4. android scroll view can not scroll to bottom.
5. android layout animation exiting animation not working. : due to the ScrollView component. github link

TODO

1. complete Header component. (Discarded)
2. new animating components. (Finished)
3. count down timer. (Finished)
4. slider picker component. (Finished)
5. drawer animation. (Finished, still need some feature)