Under any of my products that have several photos the photos continue down the page and leave a large white area to the right of them. How can I fix this to avoid large blank spaces? I am using the "Simple" theme.
Actually, that space is there because your number of extra images is a lot. We can't remove that space but you can put your images in horizontal scrolling under the main image. This trick will help you.
The products on your site seem to have multiple thumbnails. I suggest you can use carousel/free scroll for the nav thumbnails on the product page. Or you can change the re-style product page with your design.
Hope this helps.