| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| .container { | |
| position: relative; | |
| margin: 50px; | |
| height: 100px; | |
| width: 100px; | |
| border: 1px solid black; | |
| } | |
| .box { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| height: 100%; | |
| width: 100%; | |
| background-color: gray; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <div class="box"></div> | |
| </div> | |
| </body> | |
| </html> |