Post Page Masonry Layout... Is it possible? Please help!

Hello, I changed my featured image size in the PHP to be uncropped. Now my posts in the post page have gaps between rows when the adjacent cell is not the same height. I want it to look like a vertical masonry layout, kind of like Pinterest. Is there any way to achieve this? I really don’t want my images to be cropped.

Here’s the page I’m talking about:

hey there

It’s possible but will require customization as well, currently, posts are organized in the rows and that’s the reason why your posts are not stacking on each other, you have to customize the template