Polish and UI improvements

Added a return/go back arrow that I also recolored to work for darkmode, when I add that feature later on today/tomorrow. Rewrote my bio text from whatever the AI gave me intially to something that’s actually accurate and true. Added “white-space: pre-line;” to the bio style aswell to make it not ignore newlines in the variable. Changed font size for blog posts and removed most (if not all) of the AI generated styling or unused components in for example the blog slug.