Twenty Eleven Help

This would require some custom coding. I also don’t recommend changing the nav bar font because if its text, it won’t load on your viewer’s computers unless they have it downloaded.

Either way, open up your header, copy the code for the searchform (or remove if you want it gone). If you want to change the font, modify your styles text property. You can also remove the padding from the header by modifying the header css.

don’t edit the Twenty Eleven theme directly – modifications will be overwritten with the next upgrade of your wordpress version, and it is also important to have an unmodified default theme in case of problems.

strongly consider creating a child theme http://codex.wordpress.org/Child_Themes