| <!DOCTYPE html> <!-- webkit-test-runner [ internal:AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| #scroller { |
| width: 500px; |
| height: 500px; |
| border: 1px solid black; |
| overflow: scroll; |
| margin: 10px; |
| will-change: transform; |
| } |
| |
| .filler { |
| height: 160px; |
| width: 10px; |
| } |
| |
| .clipper { |
| width: 300px; |
| height: 400px; |
| margin: 10px; |
| overflow: hidden; |
| border: 2px solid black; |
| position: relative; |
| will-change: transform; |
| } |
| |
| .controls-bar-bottom { |
| position: absolute; |
| width: 100%; |
| height: 50px; |
| bottom: 0; |
| z-index: 0; |
| } |
| |
| .above, .below { |
| position: absolute; |
| width: 100%; |
| height: 100%; |
| } |
| |
| .above { |
| background-color: green; |
| } |
| |
| .below { |
| background-color: red; |
| will-change: transform; |
| } |
| </style> |
| <script> |
| window.addEventListener('load', () => { |
| document.getElementById('scroller').scrollTop = 95; |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div id="scroller"> |
| <div class="filler"></div> |
| <div class="clipper"> |
| <div class="controls-bar-bottom"> |
| <div class="below"></div> |
| <div class="above"></div> |
| </div> |
| </div> |
| <div class="filler"></div> |
| </div> |
| </div> |
| </body> |
| </html> |
