| <!DOCTYPE html> |
| <!-- |
| | Stacking contexts are different from containing blocks, and elements of |
| | differing containing blocks can share the same stacking context. This |
| | test ensures that elements with differing containing blocks are rendered |
| | in the correct order according to their mutual stacking context. |
| | The results should show the blue box infront of all other boxes as it has |
| | the largest z-index, even though it is a child of another element that does |
| | not have z-index specified. The gray box containing the blue box should |
| | appear in the back as it has an implied z-index of 0. |
| | https://www.w3.org/TR/CSS21/visuren.html#z-index |
| --> |
| <html> |
| <head> |
| <style> |
| .red, .green, .blue { |
| position: absolute; |
| width: 100px; |
| height: 100px; |
| } |
| .red { |
| left: 0px; |
| top: 0px; |
| background-color: rgb(255, 100, 100); |
| z-index: 1; |
| } |
| .green { |
| left: 30px; |
| top: 30px; |
| background-color: rgb(100, 255, 100); |
| z-index: 2; |
| } |
| .blue { |
| left: 40px; |
| top: 40px; |
| background-color: rgb(100, 100, 255); |
| z-index: 3; |
| } |
| .blue-container { |
| position: absolute; |
| left: 20px; |
| top: 20px; |
| |
| width: 150px; |
| height: 150px; |
| |
| background-color: rgb(100, 100, 100); |
| } |
| </style> |
| </head> |
| <body> |
| <div class="blue-container"> |
| <div class="blue"></div> |
| </div> |
| <div class="green"></div> |
| <div class="red"></div> |
| </body> |
| </html> |
