| <!DOCTYPE html> |
| <style> |
| .scroller { |
| overflow: scroll; |
| width: 400px; |
| height: 400px; |
| will-change: transform; |
| } |
| .spacer { |
| height: 2000px; |
| } |
| .prepadding { |
| height: 101.9px; |
| width: 100%; |
| } |
| .sticky { |
| position: sticky; |
| width: 100%; |
| height: 100px; |
| background: green; |
| top: 0; |
| } |
| </style> |
| |
| <div id='scroller' class='scroller'> |
| <div class='prepadding'></div> |
| <div class='sticky'></div> |
| <div class='spacer'></div> |
| </div> |
| |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| function finishTest() { |
| scroller.scrollTop = 150; |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| |
| window.addEventListener('load', function() { |
| requestAnimationFrame(function() { |
| requestAnimationFrame(finishTest); |
| }); |
| }); |
| </script> |
