Product Page Editing

I’m creating a custom CSS stylesheet to override my theme and remove header image on certain pages. My URL is:
http://d18.5a9.myftpupload.com/?post_type=product
(I have still not gone “LIVE” with it yet)

On this page, you will see the products that I have listed for sale. If you click on one of the products, you will see the header is hidden on the product page. I would like to do this for the URL above as well, but I do not know the identifier for the page.

My CSS for hiding the header on the actual product pages is:
.single-product #header-image {
display: none;
}

and I have also done this for my cart and checkout pages, but I need help finding the identifier for the “Shop” page. Any help would be appreciated! Thanks!