| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"/> |
| <title>Unique Identifier</title> |
| <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#attributes-common-to-html-and-mathml-elements"> |
| <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#css-styling"> |
| <link rel="match" href="unique-identifier-3-ref.html"/> |
| <meta name="assert" content="Verify that the id attribute affects CSS selectors."> |
| <style> |
| #fail { display: none; } |
| #pass { background: green; } |
| </style> |
| </head> |
| <body> |
| |
| <p>Test passes if you see the text "PASS".</p> |
| <math> |
| <mtext id="fail" style="background: red; color: white;">FAIL</mtext> |
| <mtext id="pass" style="color: white;">PASS</mtext> |
| </math> |
| |
| </body> |
| </html> |