#wallpaper0 { background-image: url('wallpapers/03-Freedom.jpg');}
#wallpaper1 { background-image: url('wallpapers/01-Beach.jpg');}
#wallpaper2 { background-image: url('wallpapers/02-Waterfall.jpg');}
#wallpaper3 { background-image: url('wallpapers/04-Sunset.jpg');}