At various points in the web’s history, it’s been seen as fashionable to see just how much of a web design you can create with just HTML and CSS — including images in the design only where absolutely needed, such as icons. It’s a great exercise for honing your skills: how far can I go with just code? But in the real world, some of the most gorgeous sites are created with multiple layers of textures, requiring the inclusion of many images by necessity.