| <!DOCTYPE> |
| <html> |
| <head> |
| <title>Opacity and positioning</title> |
| <style type="text/css" media="screen"> |
| .container { |
| position: relative; |
| height: 120px; |
| width: 120px; |
| padding: 10px; |
| margin: 50px; |
| -webkit-box-sizing: border-box; |
| border: 1px solid black; |
| } |
| |
| .child { |
| height: 100px; |
| width: 100px; |
| opacity: 0.8; |
| background-color: red; |
| } |
| |
| .inner { |
| position: absolute; |
| width: 100px; |
| height: 100px; |
| background-color: green; |
| } |
| |
| .compositing { |
| will-change: transform; |
| } |
| </style> |
| </head> |
| <body> |
| <p>You should see two green boxes below, with no red</p> |
| |
| <div class="container"> |
| <div class="child"> |
| <div class="inner"></div> |
| </div> |
| </div> |
| |
| <div class="container"> |
| <div class="child"> |
| <div class="inner compositing"></div> |
| </div> |
| </div> |
| |
| </body> |
| </html> |
