| <!DOCTYPE html> |
| <html> |
| <body> |
| <p> |
| This tests that a modal dialog's containing block is in the initial containing block and that it is unaffected by |
| ancestor elements with overflow or opacity. |
| <div style="position: absolute; top: 400px; opacity: 0.3"> |
| <dialog id="opaqueDialog" style="position: absolute; top: 250px; left: 0px; background-color: magenta"> |
| This dialog should be unaffected by its ancestor with opacity. |
| </dialog> |
| </div> |
| <div style="position: absolute; overflow: hidden; width: 500px; height: 150px; top: 400px; left: 300px"> |
| <dialog id="unclippedDialog" style="position: absolute; top: 200px; left: 0px; height: 100px; background-color: cyan"> |
| This dialog should be unaffected by its ancestor with overflow. It should not be clipped. |
| </dialog> |
| </div> |
| <div style="position: absolute; top: 1000px; left: 1000px; width: 20px;"> |
| <dialog id="bottomDialog" style="position: absolute; top: 100px; height: 250px; width: 90%; background-color: yellow"> |
| This dialog should be onscreen with a width of 90% of the page. It is the child of an narrow element |
| positioned off screen, but the containing block of a top layer element is the initial containing block, so its |
| position and percent lengths are relative to that. |
| </dialog> |
| </div> |
| <script> |
| document.getElementById('bottomDialog').showModal(); |
| document.getElementById('unclippedDialog').showModal(); |
| document.getElementById('opaqueDialog').showModal(); |
| </script> |
| </body> |
| </html> |
