How to set background for a Steam profile? - Arqade

I noticed some of my friends can change their Steam background profile. I searched in "Edit Profile" tab to edit mine but I don't see how. Can someone explain how to do this ?

How To Add Awesome Backgrounds To Your Steam Profile

How to set up a Steam profile showcase? - Arqade

Identify Any Steam Profile Background

Favorite Steam profile backgrounds? : r/Steam

Steam Background While Playing Game - Colaboratory

SeeRjED's Steam Profile Designs on Behance

SeeRjED's Steam Profile Designs on Behance

I made a steam artwork profile layout featuring my favorite SAO

Steam: Animated Borders, Backgrounds and Profiles Explained

Does anyone know how to set the image for THIS view for non-Steam

Steam profile design Saber Alter by Haku-A-R-T on DeviantArt

Steam How To Let Something Download In The Background - Colaboratory