Multiple Images on Product Page not displaying correctly due to image container cropping

I am new to Squarespace. Still learning. I have opted to use the Brine Family Hester template to populate my online store. The problem I am challenged with is how do I size an image to fit in the current image container on the product page. So my primary or thumbnail image displays 100% but the 2nd and third image is being cropped by the container making its visual information to the customer incomplete. So these images display the products dimensions but half of it is being cropped by the image container, hence useless. How can I determine the image container size on the product page in order to manipulate the image in CorelDraw to fit the container. I have tried the Aspect Ratios and Cropping functions available in Squarespace without success.

Can you please suggest a solution

Thank you

Hi,

Can you share link to product?