| <!DOCTYPE html> |
| <html> |
| <head> |
| <title></title> |
| <style> |
| |
| .container { |
| position: relative; |
| margin: 20px; |
| width: 300px; |
| height: 300px; |
| border: 1px solid black; |
| } |
| |
| .composited { |
| transform: translateZ(0); |
| } |
| |
| .relative { |
| position: relative; |
| top: -20px; |
| margin: 10px; |
| padding: 10px; |
| border: 2px solid orange; |
| } |
| |
| .clipping { |
| overflow: hidden; |
| height: 200px; |
| } |
| |
| .trigger { |
| margin: 10px; |
| height: 50px; |
| background-color: silver; |
| } |
| |
| .composited.relative { |
| height: 200px; |
| } |
| |
| .absolute { |
| position: absolute; |
| margin: 10px; |
| height: 10px; |
| width: 100px; |
| background-color: silver; |
| } |
| |
| body.changed .absolute { |
| width: 120px; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.waitUntilDone(); |
| testRunner.dumpAsText(); |
| } |
| |
| window.addEventListener('load', () => { |
| setTimeout(() => { |
| document.body.classList.add('changed'); |
| if (window.internals) |
| document.getElementById('layers').textContent = internals.layerTreeAsText(document); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }, 0); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div class="composited container"> |
| <div class="composited trigger"></div> |
| <div class="relative clipping"> |
| <div class="absolute" style="top: 10px;"></div> |
| <div class="absolute" style="top: 30px;"></div> |
| <div class="absolute" style="top: 50px;"></div> |
| </div> |
| </div> |
| <pre id="layers"></pre> |
| </body> |
| </html> |
