| <!DOCTYPE html> | |
| <title>CSS Position Test: Replaced <object> renders ::backdrop in top layer</title> | |
| <link rel="help" href="https://drafts.csswg.org/css-position-4/#backdrop"> | |
| <link rel="match" href="/css/reference/green.html"> | |
| <style> | |
| object.green::backdrop { background-color: green; visibility: visible; } | |
| object { visibility: hidden; } | |
| </style> | |
| <object id="pop" popover="auto"></object> | |
| <script> | |
| pop.showPopover(); | |
| pop.className = "green"; | |
| </script> |