Image Sizes Not Matching

I just installed your plugin and it seems great! However, if the before and after images are uploaded at a different ratio, the images do not align with each other. See the image at the bottom of the page with the two fridges. The bottom images are not lined up and it looks weird. How do I make the two images align top and bottom with each other?

The page I need help with: [log in to see the link]