public void CssPrefix(string cssprefix)
{
Document doc = new Document(MyDir + "Bookmark.doc");
HtmlFixedSaveOptions saveOptions = new HtmlFixedSaveOptions();
saveOptions.CssClassNamesPrefix = cssprefix;
doc.Save(MyDir + @"\Artifacts\cssPrefix_Out.html", saveOptions);
DocumentHelper.FindTextInFile(MyDir + @"\Artifacts\cssPrefix_Out\styles.css", "div");
}