You're welcome. Also works for Chrome & Firefox under Win 10 desktop too, and probably Edge.

It should be pinned as the question is regularly recurring. Perhaps that functionality isn't enabled/enablable in this forum software?

Unfortunately, correcting this idiosyncrasy within browser permissions presents a converse issue, every Guitar Tricks vid tutorial presents with its volume auto set to maximum independent of the Win desktop setting. If only there were universal remember last setting function as integrated within e.g. You Tube's desktop site or the Mediamonkey application.