| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .list { |
| height: 200px; |
| position: relative; |
| overflow: auto; |
| } |
| |
| .will-change { |
| will-change: transform; |
| backface-visibility: hidden; |
| } |
| |
| .flip-container, .front, .back { |
| -webkit-perspective: 1000; |
| width: 320px; |
| height: 427px; |
| } |
| |
| .front, .back { |
| backface-visibility: hidden; |
| |
| transition: 0.0s; |
| transform-style: preserve-3d; |
| transform: rotateY(0deg); |
| |
| position: absolute; |
| top: 0; |
| left: 0; |
| } |
| |
| .front { |
| transform: rotateY(180deg); |
| } |
| |
| .back { |
| background: lightblue; |
| opacity: 0.5; |
| } |
| |
| </style> |
| </head> |
| |
| <body> |
| <div class="flip-container"> |
| <div class="front"> |
| <div class="list will-change"> |
| <div style="height: 82px; left: 0px; position: absolute; top: 0px; width: 100%;"></div> |
| <div style="height: 82px; left: 0px; position: absolute; top: 164px; width: 100%;"></div> |
| </div> |
| </div> |
| <div class="back"> |
| </div> |
| </div> |
| <p>This test verifies that "will-change" preserves the backface-visibility for |
| scrollbar.</p> |
| </body> |
| </html> |
