<html xmlns="http://www.w3.org/1999/xhtml"> <head> <link rel="author" title="L. David Baron" href="https://dbaron.org/"/> <link rel="author" title="Mozilla" href="http://mozilla.org/"/> <title>CSS Namespaces Test Suite reference</title> </head> <body> <p><test style="background: lime">This sentence should have a green background.</test></p> </body> </html>