HTML to Wordpress Help

I'm in the process of turning an HTML theme to a Wordpress theme. For some reason the site shifted to the left after I place the WP code in. I'm thinking it may be either a CSS issue or a javascript issue, but I'm not 100% certain. Any thoughts on what I'm doing wrong on how to fix it?

Here's the template in html: http://www.templatemonster.com/demo/32566.html

Here's my Wordpress version: http://childrensguy.com/stonegate/

Thanks!

 

try to use this CSS code:

* {
margin-left: auto;
margin-right: auto;
}