Your iPhone’s dock is ever present. Also ever-present is the translucent ribbon behind the icons. Maybe it’s there to provide visual separation from the wallpaper behind it, but seeing as the rest of your home-screen icons are left to fend for themselves, visibility-wise, then maybe not. Perhaps it’s there to provide a visual separation between the privileged Dock and the rest of the home-screen proletariat?
But if you don’t like this separator, then you’re stuck with it. Or are you? You may not be able to remove the ribbon, but you can hide it.