Spacing is not the same in edit mode vs when an auction is published.

I know this is an html issue.
How can I idkentify bad code before item is uploaded? How can I fix it? How can I prevent from happening? Its insanely annoying! I want what i see in edit mode to actually be what gets uploaded to ebay. As you see additional spacing gets added when its uploaded and looks like crap.
- Will you guys ever automate sku numbers so I don’t have to manually type them out every single time? It so insanely simple to do and would save everybody a lot of time. I have posted about this before. Use something similar to a label maker. I would imagine most people print sku labels for items they are selling anyways and would be familiar.