| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>backdrop-filter: Forms a containing block for fixed/absolute</title> |
| <link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org"> |
| <link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty"> |
| <link rel="match" href="backdrop-filter-containing-block-ref.html"> |
| |
| <p>Expected: one green square and one red square, both 200px by 200px.</p> |
| <div class="container"> |
| <div class="fixed-child"></div> |
| <div class="absolute-child"></div> |
| </div> |
| |
| <style> |
| .container { |
| width: 200px; |
| backdrop-filter: invert(1); |
| } |
| |
| .fixed-child { |
| position: fixed; |
| top: 0; |
| background-color: green; |
| width: 100%; |
| height: 200px; |
| } |
| |
| .absolute-child { |
| position: absolute; |
| top: 0; |
| left: 210px; |
| background-color: red; |
| width: 100%; |
| height: 200px; |
| } |
| </style> |
| |
