How to add a custom Firefox Background(GIF's INCLUDED!)

Описание

Today I am going to be showing you guys how to add a custom Firefox background where you can add not only images, but also GIFs. This doesn't need any addons like other videos do and actually changes the back picture.
*****PASTEBIN LINKS:*****
Code for userContent.css FILE (FIRST PASTEBIN LINK): https://pastebin.com/MLKcJeCx
about:config copy and paste(SECOND PASTEBIN LINK): https://pastebin.com/gACmQvZ0






0:00 Intro
0:44 Opening Profiles Folder
1:24 Making Chrome and Image Folder
1:50 Making the CSS file
2:58 Add your Image
3:09 Copy and Paste the code
5:00 Allow custom style sheets
6:19 Restarting Firefox
6:45 Voilà!
7:02 Outro