to change for what purpose??

I looked but can't find.

I would like the right part of my header (auto-nav) to expand as the section gets larger (more pages added). I researched here and found that I should remove height and float. Which file though?

I would like to reduce the height of my footer also. I know to reduce the height, I just can't find which file. Or I change it and it changes back.

Help?? Ir please

public_html/conc/packages/theme_whitespace/themes/whitespace