I am on a free trial at the moment.
When I insert a line in my page sometimes it shows and sometimes it does not show.
For example I created this page (with lines):
http://www.eyield.co.uk/FTSEtiming/ftse … 50302.html
I then selected all the page in Visual site designer, then new page then paste (copied the page). I renamed the page changed some text and published here:
http://www.eyield.co.uk/FTSEtiming/ftse … 0302a.html
As you can see the horizontal lines have disappeared. They are showing in the editor but not in the browser.

Both pages are password protected. Please unlock that page or post the credentials.

here is the first page
http://www.eyield.co.uk/blog/ftseindicator150302.html

and the second page:
http://www.eyield.co.uk/blog/ftseindicator150302a.html

now I don't know if you see the horizontal lines but I don't see them anymore