This thread should be a continuation of the thread that you started yesterday:
and not a new thread. Please do not start new threads about the same topic. Just add a post to the existing thread. In that way, the record of progress will be continuous.
I cannot see (or understand) the issues that you are describing.
How do you want the page to look with a margin or padding above the main logo image? Perhaps an annotated screen shot would help.
The "sections" seem to be very visually separated in Firefox. Are you seeing the problem with overlapping content in a particular browser? Again, an annotated screen shot might help.