Well at the moment your site doesn’t build because you’ve got an extra comma in your json files.
With git…you should be able to just delete the files, and then commit the changes, and then those files will be removed from the repository (actually they’re still there in history…but not in a place where they’ll cause issues).
And looking at your data, the images are possibly displaying the way they are because they’re lower-resolution images than the size allocated in the CSS file.
I will need to go back and check.
I was actually changing around the numbers, to see if any of them had an effect on the image. However, most numbers I played around didn’t have an effect on the image so I might have left the number as it was.