| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| #willChangeTop { |
| position: absolute; |
| left: 200px; |
| top: 100px; |
| width: 100px; |
| height: 100px; |
| background-color: blue; |
| color: white; |
| } |
| |
| #willChangeTransform { |
| transform: translateZ(0); |
| position: absolute; |
| left: 200px; |
| top: 300px; |
| width: 100px; |
| height: 100px; |
| background-color: blue; |
| color: white; |
| } |
| |
| .fixed { |
| position: fixed; |
| left: 50px; |
| top: 50px; |
| width: 75px; |
| height: 75px; |
| background-color: green |
| } |
| </style> |
| </head> |
| |
| <body> |
| This test verifies that "will-change: -webkit-transform" creates a containing |
| block for fixed position descendants, and that other values of will-change do |
| not create such a containing block. |
| <div id="willChangeTop"> |
| will-change: top |
| <div class="fixed"></div> |
| </div> |
| <div id="willChangeTransform"> |
| will-change: -webkit-transform |
| <div class="fixed"></div> |
| </div> |
| </body> |
| |
| </html> |
