Facebook Log in Background Change

Hi friend...
how are you?
today my blog has completed 1 month
so in the happiness of this day i am going to show you how to chnage the background of your facebook log in page
for it you should have a google chrome
now download this extension for your chrome

now install this extension via clicking on add to chrome

after adding it on chrome
go to setting>tools>extension
than fb refresh and than option

now a window will open
put the image link which you want to add on a background image in facebook login page
image link should be in http:// mode

now save it and oepn facebook
you will see magic like -

you have done...
Cheers!!!!
Thanks for reading :)