Wordpress site fine tune (font size & nav menu)

Hallo! I’ve stumbled onto some problems in creating my portfolio site: 1. I’m happy with the menu at ‘A’ but would like ‘B’ & ‘C’ to have the same font as ‘A’. (Every drop down menu should be the same as ‘A’) 2. With ‘B’ & ’C’ I want the 'faded block' to stretch to fit the pop up heading instead of the heading going to a new line. i.e.: ‘Family (Preggi & Baby)’ Instead of: ‘Family (Preggi & Baby 3. At ‘C’ I would like the two blocks not to overlap. 4. Because I will have a lot of entries I want to be able to scroll up & down in my nav menus. I prefer a scroll bar that’s simple like the Facebook bar. Marked with ‘X’ 5. The spacing between the headings at ‘B’ & ’C’ is far too large. They can be the same as ‘A’.