Fixed color issues that were making things hard to read:
- selected text color, including inline code.
- HTML tags
- Horizontal rule not visible in Preview mode. While at it, I changed the color in Edit mode as well as syntax highlighting.
- blockquote (was gray over gray)
Attempted to fix uneven margins between top and bottom for inline-code and codeblock. Also, removed the extra margin to make it more nice and cosy, instead of far apart.
5d1d36d4af