That indeed helps some. I should add this code in the "_edge.js" file right? (there's no way to edit this css inside edge since it only edits the "_edgeActions.js" file.
However, I noticed this is not standard CSS syntax (the one used on the automatically generated file, since it's actually .js). Should I create a .css file or how could I add this? I'm sorry, I'm not a programmer, I'm a designer with some programming knowledge so maybe my question is a bit silly.
So far this is the only reference I found of the video throughout all the files:
rect: ['22px', '-463px','756px','425px','auto', 'auto'],
If this is the code I should add (from that link you sent me):
position: fixed; right: 0; bottom: 0;
min-width: 100%; min-height: 100%;
width: auto; height: auto; z-index: -100;
background: url(polina.jpg) no-repeat;
How should I format it?