| <!DOCTYPE html> |
| <html class='reftest-wait'> |
| <title>Sticky elements inside fixed ancestors shouldn't account for scroll</title> |
| <link rel="match" href="position-sticky-fixed-ancestor-ref.html" /> |
| <link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" /> |
| <link rel="help" href="https://crbug.com/1019142"> |
| <meta name="assert" content="This test checks that a sticky element inside a fixed subtree doesn't scroll with the viewport "/> |
| |
| <script src="/common/reftest-wait.js"></script> |
| <script src="../resources/ref-rectangle.js"></script> |
| |
| |
| <style> |
| body,html { |
| margin: 0; |
| width: 100%; |
| height: 100%; |
| } |
| |
| .sticky { |
| background: green; |
| position: sticky; |
| bottom: 50vh; |
| width: 100px; |
| height: 10%; |
| } |
| |
| .spacer { |
| height: 90%; |
| } |
| .long { |
| height: 600vh; |
| } |
| |
| .position-parent { |
| position: absolute; |
| display: flex; |
| align-items: center; |
| justify-content: center; |
| width: 100%; |
| height: 100%; |
| top: 100vh; |
| background-color: lightgrey; |
| } |
| |
| .container { |
| width: 100px; |
| height: 100%; |
| background-color: grey; |
| } |
| |
| button { |
| position: fixed; |
| left: 20px; |
| top: 20px; |
| } |
| |
| .fixed { |
| position: fixed; |
| top: 25vh; |
| } |
| </style> |
| |
| <div>You should see a green box below. No blue should be visible.</div> |
| <div class="position-parent"> |
| <div class="container"> |
| <div class="spacer"></div> |
| <div class="sticky"></div> |
| </div> |
| </div> |
| <div class="long"></div> |
| <button id="button">Toggle Fixed</button> |
| <script> |
| function toggleFixed() { |
| document.querySelector('.position-parent').classList.toggle('fixed'); |
| } |
| |
| document.getElementById('button').addEventListener('click', toggleFixed); |
| |
| requestAnimationFrame(() => { |
| window.scrollTo(0, document.querySelector('.long').clientHeight); |
| createIndicatorForStickyElements(document.querySelectorAll('.sticky')); |
| requestAnimationFrame(() => { |
| toggleFixed(); |
| takeScreenshot(); |
| }); |
| }); |
| </script> |
| </html> |
