B-612 I apologize, you are right.
Don't apologize, go and actually read the linked document. Your post is still devoid of any useful information and shows a lack of research.
1) no idea what menu you mean, what template you use, what you have tried, what you expect and what happens instead
2) same as above
3) user styles are your friend: https://www.dokuwiki.org/devel:css#user_styles
4) have you actually searched? It's really not that hard to find: https://www.dokuwiki.org/template
Next time: one thread per topic!