block the site specific or specific site for viewing or parental access

if you want to block the site specific or specific site for viewing or parental access please go through easy steps
a text file in Notepad that controls access to the Internet. Adding the website you wish to block to the Hosts file
Click the "Start" button and select "Run."
Type "cmd" without the quotes in the "Open" field and press the "Enter" key or click "OK."
Type "notepad c:\WINDOWS\system32\drivers\etc\hosts" without the quotes in the command line window.
Scroll to the end of the text file in Notepad.
Type "127.0.0.1" without the quotes and then the name of the website you want to block. For example, type "127.0.0.1 website.com" without the quotes to block website.com. Repeat this step for each website you want to block.
Click "File" in the Notepad menu bar and then "Save" to save to file when you are finished adding each website.
Close Notepad.
Close the command line.