| <!doctype HTML> |
| <link rel="author" title="Chris Harrelson" href="chrishtr@chromium.org"> |
| <link rel="match" href="composite-change-after-scroll-preserves-stacking-order-ref.html"> |
| <link rel="help" href="https://www.w3.org/TR/CSS2/zindex.html"/> |
| <script src="/common/reftest-wait.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <style> |
| #one, #two { |
| width: 200px; height: 200px; background: lightblue; position: relative |
| } |
| #one { |
| background: lightblue |
| } |
| #two { |
| background: lightgray; |
| margin-top: -200px; |
| } |
| </style> |
| <html class=reftest-wait> |
| <div id=scroller style="overflow: scroll; width: 300px; height: 300px; will-change: transform"> |
| <div id=one></div> |
| <div id=two></div> |
| <div id=spacer style="width: 50px; height: 5000px"></div> |
| </div> |
| </html> |
| <script> |
| onload = () => { |
| waitForAnimationFrames(2).then(() => { |
| scroller.scrollBy(0, 1000); |
| waitForAnimationFrames(2).then(() => { |
| one.style = 'will-change: transform'; |
| waitForAnimationFrames(2).then(() => { |
| scroller.scrollBy(0, -1000); |
| takeScreenshot(); |
| }); |
| }); |
| }); |
| }; |
| </script> |
