pre { border: 2px solid maroon; padding: 0.2em; margin-bottom: 1em }
div { border: 2px solid blue; padding: 0.2em; margin: 0.2em }
div p { border: 2px solid red; padding: 0.2em; margin: 0.2em }
div span { border: 2px solid green; padding: 0.2em; margin: 0.2em }