How to unblock Facebook friend using Facebook website

You have to open the Facebook website on your computer, after that you have to log in your ID, now click on Facebook's settings, after that you will see the Blocking option in front of you, you have to click it, now your A new page will open in front, this is the list of all the blocked friends, click on unblock in front of the one you want to unblock, in this way it will be unblocked.