#wallpaper0 { background-image: url('wallpapers/wallpaper7.jpg');}
#wallpaper1 { background-image: url('wallpapers/spiral_galaxy.jpg');}
#wallpaper2 { background-image: url('wallpapers/cassiopeia_a.jpg');}
#wallpaper3 { background-image: url('wallpapers/andromeda.jpg');}
#wallpaper4 { background-image: url('wallpapers/gasous_cavity.jpg');}
#wallpaper5 { background-image: url('wallpapers/mystic_mountain.jpg');}
#wallpaper6 { background-image: url('wallpapers/isis.jpg');}
#wallpaper7 { background-image: url('wallpapers/galactic_nebula.jpg');}
#wallpaper8 { background-image: url('wallpapers/butterfly_nebula.jpg');}