Reducing Standard Template header area height

Hi!

I'd like to reduce the height of the Standard Template header area. When I reduce the pixel amount of header.header-wrap height, the text goes up. Instead, I would just like to cut the excessive space from the bottom of the header area in such a way that the text and other elements (background image) would stay in place.

 header.header-wrap { height: 550px; } 

Thanks!