Dawn Theme - Added custom Image above Header - How to scroll over it (parallax effect)

Dawn Theme - I added an image to a custom CSS section above the Header Section. Now I want to scroll the Custom CSS Section as a parallax. How can this be done? Thanks!

This is the Custom Liquid in the theme editor:

This code you gave me is in place of the Custom CSS section in the theme editor:

#logo-scroll {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: -111;
}
#logo-scroll {
background-attachment: fixed;
background-size: cover;
}

All the coding does is place the image overlapping the page. Nothing more. :disappointed_face: Maybe you see something in the code wrong?