Just copy and paste this Java Script Code in the address bar of your web browser and hit enter, and any Web Page / Website will become editable just like a Word Document.
Below is the Java Script :
Note : It might not be possible for you to use this script while pasting it into Address Bar. So what can you do is that press F12 of your keyboard when you are on the website you want to edit. Then copy and paste the following script and press enter. Now you will be able to edit or modify the Webpage as per your wish.
So this was the Trick to modify any Website.