Thanks, that's helpful, but if it looks okay on the author central preview and then the code doesn't work when it publishes...
I went back and copied the code on another book that I have that looks fine. Looked exactly like I wanted in the preview. Didn't work on the store.
I'm in a holding pattern until my blurb publishes with proper spacing via kdp. Then I'll try adding the code on the KDP side.
Not sure what's happening in AuthorCentral since I don't use it for book descriptions. Maybe they have tags that are not supported in KDP? Not sure.
I use html tags in KDP for my descriptions and have had no problems.
Here is what I use to test it on my laptop.
1)Create a file called test.html. I use Notepad for this.
2) Put the code below in it
<!DOCTYPE html>
<html>
<body>
<h4>This should help test product descriptions on your laptop to see how it looks.
</h4><p>Keep all info mushed as Lynn said.</p><p>You can use notepad to create/edit
your description using html tags.</p>
</body>
</html>
3) Your html tags and description should go between the <body> </body> tags. This is only for testing on your laptop.
4) Double click on this test.html file and it should open in your default browser and show how it will appear on a web page.
5) Once it looks good on your laptop, only copy everything between <body> </body> tags to KDP (do not include the <body> tags).
6) When you upload to KDP sometimes you may notice line breaks and empty spaces - I just delete these manually and have never had a problem with my descriptions loading the way I want.
EDIT: In fact, you can see the empty spaces I am talking about in step 6, in this post in the html code.