| <!DOCTYPE html> | |
| <link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility"> | |
| <link rel="help" href="https://crbug.com/1316517"> | |
| <meta name="assert" content="Ensure content-visibility: hidden doesn't apply to <output> elements"> | |
| <style> | |
| output { | |
| content-visibility: hidden; | |
| } | |
| </style> | |
| <output> | |
| <iframe></iframe> |