Resize Feature image and attributes like padding, alignment etc?

I think it featured image is too large. Is it possible to adjust the image to a smaller size, also it would be nice to adjust its attributes like alignment, padding, etc? I currently have the free version of ColorMag. Does the ColorMag subscription allow edits to the featured image?

There was a post related to size, but discussion is closed.

The page I need help with: [log in to see the link]