Menu bar smaller

Hey there, I have a few questions regarding the theme, I took a screenshot and put numbers on it to clarify it. Website: www.zoetebekje.com Screenshot: http://i1050.photobucket.com/albums/s401/LollieLaurie/Schermafbeelding2013-03-29om204410.jpg 1. The menubar: is it possible to make it smaller? The height I mean. Also the page that you currently are on is highlighted, how to disable that? 2.Where can I change the background color of the search bar? 3. There's a white border around the images, how do I disable that? 4. The space between the menubar and logo is to wide, can it be less?   I hope I wrote in understable English. Hehe Thanks