Displaying blocks in the center of the site

I punched to change a subject. But when I replaced display on the center all blocks were displayed by one behind one. Horizontal display vanished. My English is very bad, it is better for me to write in German. But all the same, I ask for help. The whole day sat with it. How to display these parts of the website on the center? https://drive.google.com/open?id=0B49KYKWzJP24T1pLUktUVE1pcmc