Search results: turn off facebook notifications

facebook generally manages app notifications when there's new news and shows it on your device.

to get the fastest facebook notification on chrome computer browser, we can adjust notifications right on our facebook account.

currently, facebook is using the tab post feature for many user accounts. this feature displays the message as a pop-up window of posts where you get a name tag that is annoying

suppose in case facebook users get too many birthday notifications on facebook that make them feel uncomfortable. so how to turn off birthday notifications on facebook? please