https://forums.opera.com/topic/34482/solved-turning-desktop-and-website-notifications-off/11?lang=en-US
[Solved]Turning Desktop and Website Notifications Off | Opera forums
Aug 15, 2019 - @sporty78 A) Yes b) Don't know, maybe. But it's totally irrelevant now.
website notificationssolvedturningdesktopopera
https://support.apple.com/guide/safari/customize-website-notifications-sfri40734/mac
Customize website notifications in Safari on Mac - Apple Support
In Safari on your Mac, stop receiving website notifications, or change how they appear.
safari on macwebsite notificationscustomizeapplesupport