| <!DOCTYPE html> |
| <title>CSS Anchor Positioning: anchor-scope:all is tree-scoped</title> |
| <link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope"> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/10525"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| #host::part(scope) { |
| /* This should have no effect, because 'all' is tree-scoped, |
| and specified in a different tree-scope than the anchor names |
| in the shadow. */ |
| anchor-scope: all; |
| } |
| </style> |
| <div id=host> |
| <template shadowrootmode=open> |
| <style> |
| .anchored { |
| background: coral; |
| position: absolute; |
| top: anchor(bottom, 1px); |
| position-anchor: --a; |
| width: 5px; |
| height: 5px; |
| } |
| .anchor { |
| background: skyblue; |
| height: 10px; |
| anchor-name: --a; |
| } |
| .cb { |
| position: relative; |
| width: 200px; |
| height: 200px; |
| border: 1px solid black; |
| } |
| .scope { |
| anchor-scope: --a; |
| } |
| </style> |
| <div class=cb> |
| <div class=anchor></div> |
| <div part=scope> |
| <div class=anchored></div> |
| </div> |
| </div> |
| </template> |
| </div> |
| <script> |
| test((t) => { |
| let e = host.shadowRoot.querySelector('.anchored'); |
| assert_equals(getComputedStyle(e).top, '10px'); |
| }, 'anchor-scope:all is tree-scoped'); |
| </script> |
| |
