| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| .parent { |
| position: absolute; |
| top: 50px; |
| left: 50px; |
| width: 100px; |
| height: 100px; |
| padding: 20px; |
| outline: 1px solid black; |
| transform: translateZ(0); |
| } |
| .box { |
| height: 100%; |
| width: 100%; |
| overflow: hidden; |
| background-color: green; |
| filter: blur(2px); |
| } |
| |
| .masker { |
| position: absolute; |
| top: 64px; |
| left: 64px; |
| width: 112px; |
| height: 112px; |
| border: 13px solid black; |
| box-sizing: border-box; |
| } |
| |
| </style> |
| </head> |
| <body> |
| <div class="parent"> |
| <div class="box"> |
| </div> |
| </div> |
| |
| <div class="masker"> |
| </div> |
| </body> |
| </html> |
