Shopping Cart pulls products down

Hello,
I’ve got WooCommerce enabled on a website, I’ve built it in the custom theme with:
<?php woocommerce_content(); ?>
And I’m using the WooCommerce default CSS, it’s working like a charm, but why does the shoppingcart on the left pulls all of the products down?
I’ve tried to reproduce by searching in the CSS for a mistake but I have nothing found.

The url is http://http://www.studiohollandship.nl/winkel/

Maybe someone has experience with this and can help me figure this out.
Kind regards,
Djoey

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