how do i shrink my home page and forum that fit in my banner size?
your forum URL please ... AND can you elaborate your requirement with an image ..
Umm, I don't really get what you mean but you can try this:
1. Go into your global.css in your admin CP. (Templates and Style > Theme > global.css)
2. CTRL + F and find '#container'
3. Change the width to 50% or whatever you prefer.
Tell me if it works.