| <!DOCTYPE html> |
| <html class=reftest-wait> |
| <meta charset="utf-8"> |
| <meta name="assert" content="Scrolling an anchor out of view should cause a position-visibility: anchors-visible element to disappear." /> |
| <title>CSS Anchor Positioning Test: position-visibility: anchors-visible</title> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/7758"> |
| <link rel="match" href="position-visibility-anchors-visible-after-scroll-out-ref.html"> |
| <script src="/common/reftest-wait.js"></script> |
| <script src="/common/rendering-utils.js"></script> |
| <style> |
| #scroll-container { |
| overflow: hidden scroll; |
| width: 300px; |
| height: 100px; |
| } |
| |
| #anchor { |
| anchor-name: --a1; |
| width: 100px; |
| height: 100px; |
| background: orange; |
| } |
| |
| #spacer { |
| height: 100px; |
| } |
| |
| #target { |
| position-anchor: --a1; |
| position-visibility: anchors-visible; |
| inset-area: bottom; |
| width: 100px; |
| height: 100px; |
| background: red; |
| position: absolute; |
| top: 0; |
| left: 0; |
| } |
| </style> |
| |
| <div id="scroll-container"> |
| <div id="anchor">anchor</div> |
| <div id="spacer"></div> |
| <div id="target">target</div> |
| </div> |
| |
| <script> |
| // #target should be initially visible because it is anchored to #anchor, |
| // which is visible. |
| |
| waitForAtLeastOneFrame().then(() => { |
| // Scroll #anchor so that it is out of view. |
| const scroller = document.getElementById('scroll-container'); |
| scroller.scrollTop = 100; |
| |
| // #target should now be invisible. |
| takeScreenshot(); |
| }); |
| </script> |
