>>>Look at the page in the Browser developer tools. In Chrome, for example, you can select the 'Elements' tab and the styles that are applied can be checked - including information on anything that's over-riding your setting.....
>>
>>We are running this in C++ application, so some sort of the MS Browser control, no dev tools.
>
>You're creating a HTML page that can't be viewed in a Browser ?

It can. I posted a fiddle. The thing is that in that fiddle it looks slightly different than in that application.

In any case, I decided to stop worrying about this minor issue. Let the users complain.