Trick - Restrict any website

How to  Restrict any  website:

1.Open Windows Explorer and type in C:/Windows/System32/drivers/etc

2.Double-click on hosts and open the document using Notepad

3.Find this line "127.0.0.1 localhost" or "::1 localhost." and just below this line Paste "127.0.0.1 www.facebook.com" 

You can replace www.facebook.com for which site you want to Restrict

4. Then save that file  and restart pc