Yes, it is a feature of the default browser stylesheet, but many websites override it. DuckDuckGo, for instance, keeps all of its links black and uses the :visi

Yes, it is a feature of the default browser stylesheet, but many websites override it. DuckDuckGo, for instance, keeps all of its links black and uses the :visited pseudo class to show the checkmark. Even if it's default browser behavior, keeping it around is a specific design decision.