| <!DOCTYPE html> |
| <title>CSS Position Test: overlay transition with ::backdrop</title> |
| <link rel="help" href="https://drafts.csswg.org/css-position-4/#overlay"> |
| <link rel="match" href="green-ref.html"> |
| <link rel="author" href="mailto:[email protected]"> |
| <style> |
| [popover] { |
| display: block; |
| visibility: hidden; |
| transition: overlay 60s step-end; |
| transition-behavior: allow-discrete; |
| } |
| [popover]::backdrop { |
| visibility: visible; |
| background-color: green; |
| } |
| </style> |
| <div popover id="foo"></div> |
| <script> |
| foo.showPopover(); |
| foo.hidePopover(); |
| </script> |
