| <!DOCTYPE html> | |
| <!-- | |
| | "z-index" applies to positioned elements. | |
| | https://www.w3.org/TR/CSS21/visuren.html#z-index | |
| --> | |
| <html> | |
| <head> | |
| <style> | |
| .outer { | |
| border: 5px solid #00b0ff; | |
| background-color: #0091ea; | |
| height: 100px; | |
| width: 100px; | |
| z-index: 0; | |
| } | |
| .inner { | |
| border: 5px solid #00e676; | |
| background-color: #00c853; | |
| height: 100px; | |
| left: 50px; | |
| position: absolute; | |
| top: 50px; | |
| width: 100px; | |
| z-index: -1; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="outer"> | |
| <div class="inner"></div> | |
| </div> | |
| </body> | |
| </html> |