Here is an example of an old blog post with a summary block with the aspect ratio of "3:2 standard": https://www.krista-mitchell.com/blog/ultimate-crystal-gift-guide
Compared to a newer blog post with the aspect ratio we now want to use and want across all blog posts: https://www.krista-mitchell.com/blog/hekas-triangles-channeling-ancient-egyptian-magic-through-crystals
The reason why I'm looking for code is so that the older blogposts reflect the aspect ratio we want to use without me having to go into each post individually to make the aspect ratio change within each summary block.