These are samples or the StyleSheets that are distributed together with Mathematica. I just ran them through my converter.
ArticleClassic.html
ArticleModern.html
Classic.html
Classroom.html
Default.html
Demo.html
DemoText.html
HelpBrowser.html
HTML.html
NaturalColor.html
Notepad.html
NotepadMono.html
PastelColor.html
PrimaryColor.html
Report.html
Textbook.html
TutorialBook.html