[Plugin: WooCommerce] Right text column below left image column

I’m in the process of setting up a WooCommerce webshop. When entering first products I see that the right text column is not directly next to the left image column but instead is shifted downwards and starts only below the images.
http://www.xalani.com/en/shop/apparel/swiss-coral-t-shirt-switzerland/
How can I correct that?
Thanks for your help!