wp ecommerce looks wrong

Hi
Can anyone tell me why my wp e-commerce page looks like this (before I take it down)

https://www.messageboardcreations.com/?wpsc_product_category=tees-2

Also my products page displays everything big and not in a grid.

https://www.messageboardcreations.com/?page_id=3185

Thanks
From Newbie to Wp e-commerce
Learning Web Designer
Non Programmer