Background color on Pages

How can I change the background of the text areas of the pages? On the main page, the background is gray and the main area is white. In the pages of the menu, the text background is gray. How do I change from gray to white?

http://www.bateiacultura.com.br/site/

 

Put the following code in custom css

Appearance -> theme options -> styling options -> custom css

Code:

.main_container {
overflow: hidden;
}

This will solve your problem.

Thanks.

 

Thank you again!