Losing Formatting When Exporting Epub from Indesign

I'm trying to export a book as an Epub from Indesign and have hit a snag. I usually have no trouble, but this book has some formatting I've never used before - namely shading and border. As you can see, in Indesign, the shading and border have no gaps between paragraphs. Also, the shading and border are offset from the text a bit.

However, once exported, all that changes. On top of that, the top line is spread out further than the other lines in the Epub - also different than the Indesign layout.

I can get the spaces between paragraphs to go away by changing the paragraph style. But then the paragraphs are jammed closer together, which is not as easy to read. However, even when I do that, I can't get the border and shading to spread out away from the text.

Any clue how to fix this?

Thanks in advance!