<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html><head> <title>CSS Test: generated content</title> <link rel="author" title="Robert O'Callahan" href="mailto:robert@ocallahan.org"> <link rel="author" title="Mozilla Corporation" href="http://mozilla.com/"> <link rel="help" href="http://www.w3.org/TR/CSS21/generate.html#content"> <link rel="match" href="reference/before-after-images-001-ref.htm"> <meta name="flags" content=""> <style type="text/css"> div:before { content:url(missing-image.png); } div { border:1px solid green; margin:5px; } </style> </head> <body><div>Inner</div> </body></html>