<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Test that XHTML vs. HTML processing decision is made by file extension</title> <style type="text/css"> p { border: medium solid; margin: 1em; padding: 1em; } </style> </head> <body> <p>This is a paragraph. <p>This is a paragraph. </p> </p> </body> </html>