| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <style> |
| |
| .box { |
| position: absolute; |
| width: 200px; |
| height: 200px; |
| background-color: red; |
| } |
| |
| .composited { |
| transform: translateZ(1px); |
| } |
| |
| .negative { |
| z-index: -1; |
| } |
| |
| .positive { |
| z-index: 1; |
| background-color: green; |
| } |
| </style> |
| |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| window.addEventListener('load', () => { |
| requestAnimationFrame(() => { |
| document.getElementById('target').classList.add('negative'); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <p>You should see a green box below.</p> |
| <div class="composited box"> |
| <div id="target" class="box"></div> |
| <div class="positive box"></div> |
| </div> |
| </body> |
| </html> |
