Fix for 163.com (#3304)
Fix for 163.com (#3304)

- Replace background-images with background in order to give them the correct color.
- Invert buttons in order to make them visible.
- Resolves #3300
alexanderby/darkreader,darkreader/darkreader,darkreader/darkreader,alexanderby/darkreader,alexanderby/darkreader,darkreader/darkreader