@chasingnewadventures, thanks for writing in! As @prakash_s mentioned earlier and demonstrated in his screenshot, you’ll need to make sure you’re inspecting the Figure portion of the “Posts: Minimal” Element to adjust this. You can find the “Figure” portion of this Element by going up to your document breadcrumbs and selecting Figure:
Once you’ve done that, go to the Border Radius option for that piece of the Element and turn it off, and you will have a square border radius all the way around your image.
We also highly recommend (if you haven’t already) going to to check out our Docs articles for anything related to the tool, but we have an article specifically breaking down the markup and approach of each “Posts” Element in the builder:
Definitely take some time to look through that when you have a chance. Cheers!