How do I see notifications on Mac?
Open or close Notification Center on your Mac
On your Mac, do any of the following: Open Notification Center: Click the date and time in the menu bar, or swipe left with two fingers from the right edge of the trackpad.
How do I turn off website notifications on Mac?
In the Safari app on your Mac, choose Safari > Settings. Click Websites, then click Notifications. Deselect “Allow websites to ask for permission to send notifications.” From now on, when you visit a website that wants to send you notifications, you aren't asked.