Main Page (Produtos Archive) css are broken (i think) – HELP!

Well I searched the forum and have not found a similar problem that would help solve the case on my woocommerce.
The main page is the Store (Produtos Archive) is totally broken and I can not find the css to fix, but opening the Products Page the css is perfect, why this happen?

Below the main page link
http://www.iluxclareamento.com.br/?post_type=product

And the product page link
http://www.iluxclareamento.com.br/?page_id=1070

The interesting thing is if I go to settings and put Products Page as main page of store it´s also broken too and still maintains the two duplicate products, someone help me please.

Breaking formatting happens also on the single product page as you can see below, how to fix it?
http://www.iluxclareamento.com.br/?product=twin-flex-evolution

Grateful to all

http://wordpress.org/extend/plugins/woocommerce/