Quote:
Originally Posted by BetterRed
Perchance you converted "…a modified copy of the docx file…"
ABC 6x9.INDD looks very much like an InDesign page layout file name, 6x9 being the paper size in inches.
And the 171 text_nn letter spacing spans suggest DTP typesetting has been used. It's the sort of thing a DTP program does at the click of a button. But, you'd need the mindset of a medieval monk to do all that finicky font character spacing in Word, with styles or in line 
BR |
In the CSS is a lot of negative character spacing. So there is no way this is purely from a Word document.