[Theme: Business Directory] Put the search bar on the center

Hello everyone,

I have to do a simple directory website with a big search bar on the center like this one : http://www.annu-services.com

So i found the theme Business Directory and i saw that they have a nice search bar on their pictures but when I launch the theme the search bar is on the right side and I don’t know how to put it in the center like in the pictures.

I would like to know how to put the search bar on the middle or, however, if you know a better way to do a website like annu-services.com.

Thanks everyone for your answer.