Is it possible to export overstrike?

I have a page that is using css overstrike - I have tried making this a span, div, class, and style - none of them export. I also tried explicitly using an overstrike font on the page, and the overstrike font is in my fonts, but that didn't work either.

I have no problem using custom fonts for body, headings h1, h2, h3 so it isn't a font problem.