[tlug] Locking an HTML Doc

[CL <az.4tlug@example.com>]

Pardon the strange Subject, but I don't know what terms I should be 
using in this request for help.
I have a document of 14 pages that was created in LibreOffice as an .odt 
original and then exported as a .pdf file for sending to a client.  The 
client has subsequently asked to have the document saved in HTML format, 
which LibreOffice can do.  But, the result, when viewed in my browser, 
is FUGLY.
I use Ariel and MS Gothic fonts in Firefox because san-serif loads 
faster and, most of the answers I am looking for are disposable when I'm 
finished.  I use serif fonts for publications and  submissions for 
readability.  I have serif sets available and Firefox uses them when 
instructed.
I am also seeing the text running edge-to-edge, at 1980x1050, when that 
wasn't the look I intended ... or even consider desirable, in this 
case.  Only the last page number remains.
The doc was prepared using Times New Roman and MS Mincho, on an A4 page, 
with 2cm Left, Right, Top margins and a 1.5cm Bottom margin with page 
numbering in the footer.  That's what I want the Client to see when they 
open the file and I want anyone else who opens it to also see the same 
fonts, graphics, and layout -- e.g. I want it to play the same on any 
machine that can parse HTML ... like it does when I send .pdf to 
machines that can read Adobe portable formats.
Is there a way to add instructions to lock my file so it can only be 
viewed one way, like a .docx, .odt, .pdf, .wcx .... nado, nado, even if 
it means appending font files or something even more space wasting.  
I've Googled, but I haven't put together a set of terms that results in 
an answer I can
--
CL