Hello again @Boot17,
I think I need a little more guidance. I'm trying your workaround to center the image. When you say, "to insert a blank column in front of it and behind it," I assume you mean to the left of it and to the right of it. Is that right? And my next question is how to do that. (Remember, this is inside a table.) I may need to be more computer-savvy than I am.
I will also need help to use the browser's debug/inspection tools, but I think I have someone here I can ask about that.