Hello, I'm following Katie's CSS tut and I was just wondering if there is a way to get the background image to not move when you scroll. Right now when I scroll up or down the background image will move with it and they are stacked like there are multiple. I just don't like the aesthetic of it so I was wondering if there was a way to get only the den thing it moves instead of it just being a whole when scrolling. I have seen it with others' dens so any help will be appreciated!