Covering product images

The add-to-cart on the mobile version of the thalia theme is covering important parts of my product image. I tried to do a workaround by making the images smaller but then there is too much whitespace on the desktop version between the products and the add to cart on the mobile view. Is there a way to lower the add to cart button (or put it under the image), make it transparent, or make it small and put it in a corner? Something where it’s not covering the bottom of the image and therefore the product. Thank you for your continued assistance and support.