What is the default "cursive" font for macOS?
WebPreferences has properties for each of the standard font families. See


https://developer.apple.com/documentation/webkit/webpreferences/1536642-standardfontfamily


Apple doesn't publish the defaults for each of these, but you can use an Xcode playground to quickly print them:

let prefs = WebPreferences()
prefs.standardFontFamily  // Times
prefs.sansSerifFontFamily // Helvetica
prefs.serifFontFamily     // Times
prefs.fixedFontFamily     // Courier
prefs.fantasyFontFamily   // Papyrus
prefs.cursiveFontFamily   // Apple Chancery