Website improvements

[AngeloCore]

Updates

• Updated style
• Dark scroll bar when using a dark theme
• Automatic language system detection
• Formatted everything using prettier

Before

After

The font was changed because of the other alphabets

Before

After

[tulir]

This is a bit too big. The code style and color scheme changes don't seem particularly useful. System language detection is probably better to do server-side and/or with a manual language picker (#85).

The scroll bar color is a good change, but I'm not sure if it's correctly implemented here. MDN seems to say that color-scheme should list all the themes that the site can be rendered in, but it doesn't say how it interacts with the prefers-color-scheme media query.

[tulir]

Adding color-scheme: light dark; globally seems to work in chromium, so I did that now (Firefox had the correct scroll bar color already before)