| <!DOCTYPE html> |
| <title>Position fixed elements should propagate from a container-type subtree.</title> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/10544#issuecomment-2248438355"> |
| <link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html"> |
| <style> |
| @container (width = 100px) { |
| #test { |
| position: fixed; |
| inset: 0; |
| background: green; |
| } |
| } |
| </style> |
| <p>Test passes if there is a filled green square.</p> |
| <div id="target" style="contain: layout; width: 200px; height: 100px; background: red;"> |
| <div style="container-type: inline-size; height: 0;"> |
| <div id="test"></div> |
| </div> |
| </div> |
| <script> |
| document.body.offsetTop; |
| document.getElementById('target').style.width = '100px'; |
| </script> |
