| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSS Test: will-change: backdrop-filter on the root should not generate a containing block for fixed positioned elements.</title> |
| <link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org"> |
| <link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=960953"> |
| <link rel="help" href="https://drafts.csswg.org/css-will-change/#will-change"> |
| <link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty"> |
| <link rel="match" href="will-change-fixedpos-cb-006-ref.html"> |
| <style> |
| html { |
| will-change: backdrop-filter; |
| } |
| body { |
| margin: 0; |
| } |
| .hidden { |
| width: 100px; |
| height: 100px; |
| background: red; |
| margin-left: 100px; |
| margin-top: 200px; |
| } |
| .fixedpos { |
| position: fixed; |
| top: 100px; |
| left: 100px; |
| background: green; |
| height: 100px; |
| width: 100px; |
| } |
| .spacer { |
| height: 2000px; |
| } |
| </style> |
| <!-- This object should be fully hidden by the fixed position object. --> |
| <div class="hidden"></div> |
| <div class="fixedpos"></div> |
| <div class="spacer"></div> |
| <script> |
| window.onload = function() { window.scrollTo(0, 100); }; |
| </script> |
