[SOLVED] How to make the width of the sidebar smaller?

my page: http://www.levoyage.nl/

I think the search bar is too close at the vertical line, i'm trying to find a way to give the search bar a static width.. but how? A other option is to move the line something to the right, but i also couldn't find out how to do that..

edit: I just want to move the vertical line something to the right, how to do that?