Mobigen Kindle previewer does not convert as good as Calibre? Help!

Hi all and thanks for reading this post.

I am trying to get help converting my epub file to .mobi using any oficcial Amazon tool (kindle previewer or kindlegen) as I contacted to KDP support unsuccessfully.

As you can see in the attachement I have 3 files:

1) Issue_test.epub that would be the original file that contains the html and css code

2) Issue_test_converted_by_calibre.mobi: This is a mobi file that preserver, exactly the format for the 3 pages that epub file contains.
As its name indicates, it was converted from attached epub file to .mobi using Calibre that is not an official tool to publish a .mobi in Amazon

3) Issue_test_converted_by_kindle_previewer.mobi: This is a mobi file that is not preserving the format for the 3 pages that epub file contains.
However, as you can see in the previous file, the .mobi file generated with a non oficcial tool is able to do it.
The problem is that I need to fix this issue if I want to publish a book with the same page format in Amazon .

How can I fix this issue? Could any one kindly provide an alternative html code that fixes the issue after kindle previewer conversion?


Thanks in advance!

Note: I also tried to use kindlegen directly to convert the epub file with the same unsuccessfully result.
I have included a comparative screen-shoot where you can see one example about the differences

Attached Thumbnails

 

Attached Files

	Issue_test.epub (3.7 KB)
	Issue_test_converted_by_calibre.mobi (48.7 KB)
	Issue_test_converted_by_kindle_previewer.mobi (34.2 KB)