| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .shouldStack { |
| position: absolute; |
| width: 150px; |
| height: 50px; |
| background-color: red; |
| z-index: 0; |
| } |
| |
| .shouldNotStack { |
| position: absolute; |
| width: 150px; |
| height: 50px; |
| background-color: green; |
| } |
| |
| .child { |
| position: relative; |
| top: 0px; |
| left: 0px; |
| width: 150px; |
| height: 50px; |
| background-color: green; |
| z-index: -1; |
| } |
| |
| .shouldNotStack .child { |
| background-color: red; |
| } |
| |
| #willChangeOpacity { |
| top: 0px; |
| left: 0px; |
| } |
| |
| #willChangeTransform { |
| top: 0px; |
| left: 200px; |
| } |
| |
| #willChangeTransformStyle { |
| top: 0px; |
| left: 400px; |
| } |
| |
| #willChangePerspective { |
| top: 100px; |
| left: 0px; |
| } |
| |
| #willChangeMask { |
| top: 100px; |
| left: 200px; |
| } |
| |
| #willChangeMaskBoxImage { |
| top: 100px; |
| left: 400px; |
| } |
| |
| #willChangeClipPath { |
| top: 200px; |
| left: 0px; |
| } |
| |
| #willChangeBoxReflect { |
| top: 200px; |
| left: 200px; |
| } |
| |
| #willChangeFilter { |
| top: 200px; |
| left: 400px; |
| } |
| |
| #willChangeZIndex { |
| top: 300px; |
| left: 0px; |
| } |
| |
| #willChangeMixBlendMode { |
| top: 300px; |
| left: 200px; |
| } |
| |
| #willChangeIsolation { |
| top: 300px; |
| left: 400px; |
| } |
| |
| #willChangePosition { |
| top: 400px; |
| left: 0px; |
| } |
| |
| #willChangeCombination { |
| top: 400px; |
| left: 200px; |
| } |
| |
| #willChangeTop { |
| top: 400px; |
| left: 400px; |
| } |
| </style> |
| </head> |
| |
| <body> |
| <div id="willChangeOpacity" class="shouldStack"> |
| <div class="child">opacity</div> |
| </div> |
| <div id="willChangeTransform" class="shouldStack"> |
| <div class="child">-webkit-transform</div> |
| </div> |
| <div id="willChangeTransformStyle" class="shouldStack"> |
| <div class="child">-webkit-transform-style</div> |
| </div> |
| <div id="willChangePerspective" class="shouldStack"> |
| <div class="child">-webkit-perspective</div> |
| </div> |
| <div id="willChangeMask" class="shouldStack"> |
| <div class="child">-webkit-mask</div> |
| </div> |
| <div id="willChangeMaskBoxImage" class="shouldStack"> |
| <div class="child">-webkit-mask-box-image</div> |
| </div> |
| <div id="willChangeClipPath" class="shouldStack"> |
| <div class="child">-webkit-clip-path</div> |
| </div> |
| <div id="willChangeBoxReflect" class="shouldStack"> |
| <div class="child">-webkit-box-reflect</div> |
| </div> |
| <div id="willChangeFilter" class="shouldStack"> |
| <div class="child">-webkit-filter</div> |
| </div> |
| <div id="willChangeZIndex" class="shouldStack"> |
| <div class="child">z-index</div> |
| </div> |
| <div id="willChangeMixBlendMode" class="shouldStack"> |
| <div class="child">mix-blend-mode</div> |
| </div> |
| <div id="willChangeIsolation" class="shouldStack"> |
| <div class="child">isolation</div> |
| </div> |
| <div id="willChangePosition" class="shouldStack"> |
| <div class="child">position</div> |
| </div> |
| <div id="willChangeCombination" class="shouldStack"> |
| <div class="child">combination</div> |
| </div> |
| <div id="willChangeTop" class="shouldNotStack"> |
| <div class="child">top</div> |
| </div> |
| </body> |
| |
| </html> |
