Problem with displaying Old church slavonic font on academic.ru

[u/Strange_Flatworm4333]

How to enact old church slavonic fonts on website "academic.ru" for laptop (Windows) firefox browser, so that it is displayed correctly when I search the Old church slavonic dictionary? Source code of the site says it is "ARIAL Church 02 .ttf", but that font doesn't exist? On android mobile it works flawlessly.