Social Engine width issues

I was playing with some of the .css layout on my social engine site. I changed the width or something and cannot figure out how to put it back. Its obviously a simple fix but I do not know much about .css The menus that used to be placed horizontally are now vertical. In the first picture the links "support" and "comment" need to be horizontally aligned. In the second picture there is a admin button on the main menu that should click down and show the mini menu. The arrow is now gone and the drop down menu does not display. I also want the page to fit the screen better.