MarketPress: Product page formatting so it looks like other pages


Per your request, here is the forum question.

I have a page and when an item is selected, I get the full screen of the item. However the page that comes up loses the rounded corners like other pages have and there seems to be dashes on the border. How do I make this page (auto-generated) look like the normal pages? Also, the product page doesn't match the others in terms of alignment of the sidebars.