minor changes

[pduchnovsky]

• Added place name/link definition
• corrected some css for mobile phones or narrow browser windows
• added nice scrollbar
• fixed blinking hyperlinks when switching dark/light mode

[yukimuon]

I really like this light/dark switcher

[adisaktijrs]

Hi @pduchnovsky, thanks for your help making this theme better. Your PR are exceptional! Also big thanks for @yukimuon for your second PR.