| <script> |
| onload = function() { |
| document.getElementById('scroller').scrollTop = 200; |
| } |
| </script> |
| <style> |
| #scroller { |
| background: gray local content-box; |
| border: 10px solid rgba(0, 255, 0, 0.5); |
| overflow: scroll; |
| padding: 10px; |
| width: 200px; |
| height: 200px; |
| } |
| |
| .spacer { |
| height: 300px; |
| } |
| </style> |
| <!-- #scroller has a locally attached background with padding so when it is |
| scrolled we can see the background slide up. Doing this on a composited |
| element without repainting requires the background to be painted into |
| the scrolling contents layer and correctly account for that layer not |
| including the border in its bounds. --> |
| <div id="scroller"> |
| <div class="spacer"></div> |
| </div> |
