| <!DOCTYPE html> |
| <link rel="match" href="backdrop-inherits-ref.html"> |
| <link rel="help" href="https://drafts.csswg.org/css-position-4/#backdrop"> |
| <style> |
| dialog { |
| --backdrop-bg: green; |
| visibility: hidden; |
| } |
| |
| dialog::backdrop { |
| position: absolute; |
| top: 100px; |
| left: 100px; |
| height: 100px; |
| width: 100px; |
| visibility: visible; |
| background-color: var(--backdrop-bg); |
| } |
| </style> |
| Test that ::backdrop inherits from its originating element. The test passes if |
| there is a green box and no red. |
| <dialog></dialog> |
| <script> |
| document.querySelector('dialog').showModal(); |
| </script> |
