Tatami Theme – Center header image in Farsi language setting

Hi,

I set up this website http://www.bukhara-web.com for a friend of mine. I did all the set up in German Language Mode and it looked fine. When I was done, I switched the side to Farsi language, because that is what he will use the site in. After doing that the header image shifted to the left and is not aligned to the center anymore. I have no idea how to change that. When changing back into German, the header looks fine again. I assume that the problem lies in the change of writing direction (from left -> right to right -> left).

Can anyone help me?

Thanks!