| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <div style="width: 20px; height: 20px;"></div> | |
| <div style="position: absolute; left: 20px; top: 20px; width: 20px; height: 20px;"> | |
| <div style="width: 20px; height: 20px;"> | |
| <div style="position: absolute; left: 50px; top: 50px; width: 50px; height: 50px;"></div> | |
| </div> | |
| <div style="position: absolute; left: 0px; top: 100px; width: 20px; height: 20px;"> | |
| <div style="width: 20px; height: 20px;"></div> | |
| </div> | |
| </body> | |
| </html> |