Photo Sizing Problems

I am displaying 4 photos/posts in a row. This used to work fine, but now if any post title under the picture is long (so that it would need to wrap to three lines), some of the other photos resize to accommodate this and the photos end up different sizes. See at: https://artofnaturalliving.com/recipe-index/ (if anyone is monitoring this). I’d love to be able to truncate a title that is too long–or any other fix (beyond not displaying the title).