| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| #container { |
| will-change: top; |
| position: absolute; |
| left: 200px; |
| top: 100px; |
| width: 100px; |
| height: 100px; |
| background-color: blue; |
| } |
| |
| .fixed { |
| position: fixed; |
| left: 50px; |
| top: 50px; |
| width: 75px; |
| height: 75px; |
| background-color: green |
| } |
| </style> |
| <script src="../resources/text-based-repaint.js"></script> |
| <script> |
| function repaintTest() |
| { |
| // Adding "will-change: transform" to the container div should |
| // make this div become the containing block for its fixed position |
| // descendant. |
| document.getElementById("container").style.willChange = "transform"; |
| } |
| onload = runRepaintAndPixelTest; |
| </script> |
| </head> |
| |
| <body> |
| <div id="container"> |
| <div class="fixed"></div> |
| </div> |
| </body> |
| |
| </html> |
