| <!DOCTYPE html> |
| <!-- |
| | This test ensures that a fixed position element forms a stacking context. |
| | While this is not explicitly required in the spec, it matches the |
| | functionality of Chrome, Firefox, Edge, and Safari (IE and old versions of |
| | Opera do not treat it as a stacking context). The results should show the |
| | blue box in front of the green box. |
| | https://www.w3.org/TR/CSS21/visuren.html#z-index |
| --> |
| <html> |
| <head> |
| <style> |
| .fixed-container { |
| position: fixed; |
| |
| width: 150px; |
| height: 150px; |
| |
| background-color: rgb(158, 158, 158); |
| } |
| .green { |
| position: absolute; |
| |
| left: 0px; |
| top: 0px; |
| |
| width: 80px; |
| height: 80px; |
| |
| z-index: 1; |
| |
| background-color: rgb(15, 157, 88); |
| } |
| .blue { |
| position: absolute; |
| |
| left: 40px; |
| top: 40px; |
| |
| width: 80px; |
| height: 80px; |
| |
| background-color: rgb(66, 133, 244); |
| } |
| </style> |
| </head> |
| <body> |
| <div class="fixed-container"> |
| <div class="green"></div> |
| </div> |
| <div class="blue"></div> |
| </body> |
| </html> |
