<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head> <title>CSS Scoping Module Level 1 - ::before and ::after pseudo elements' contents on a shadow host must be rendered</title> <link href="mailto:rniwa@webkit.org" rel="author" title="Ryosuke Niwa" /> <link href="http://www.w3.org/TR/css-scoping-1/#selectors-data-model" rel="help" /> <link href="reference/green-box.xht" rel="match" /> </head> <body> <style> my-host { display: block; width: 100px; height: 100px; background: red; } my-host::before { display: block; content: ""; width: 100px; height: 25px; background: green; } my-host::after { display: block; content: ""; width: 100px; height: 25px; background: green; } </style> <p>Test passes if you see a single 100px by 100px green box below.</p> <my-host> <div>FAIL</div> </my-host> <script> try { var shadowHost = document.querySelector('my-host'); shadowRoot = shadowHost.attachShadow({mode: 'open'}); shadowRoot.innerHTML = '<div style="width: 100px; height: 50px; background: green"></div>'; } catch (exception) { document.body.appendChild(document.createTextNode(exception)); } </script> </body></html>