How to block frequent push notification in android phone

Some time by mistake we will accept  notifications from any of the site and we will keep getting notifications. These notifications are disturbing a lot and how can we we disable these notification. In the below example i will show you , how to stop vikatan notifications in android phone.

Just do long press on the notification and we can see the settings like below

now in the settings sections just disallow the notification for the site. This process is applicable to any site. I just explained the process what i did recently for vikadan notification