I don't see that anywhere in the page source. And when I try to manually inject that css it says it's an invalid property name.
For context, I'm using Firefox on Linux. Also I haven't done any real front-end work in 10 years, so forgive me if I am missing something obvious here.
The fact that I haven't done any serious work involving hinting with this font may have something to do with this issue as well. I'll have to look at this later.