| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <title></title> |
| <script> |
| |
| </script> |
| <style> |
| /* 'mask-image-slice' without 'fill' clips inner content area away. |
| 'clip' clips evyerthing outside of rect() away. |
| If filter wouldn't be applyed first in the chain, you either see |
| blured background in the 'fill' area, or outsite the 'clip' area. */ |
| div { |
| width: 350px; |
| height: 350px; |
| background-color: red; |
| position: absolute; |
| -webkit-mask-box-image-slice: 75; |
| -webkit-mask-box-image-repeat: stretch; |
| -webkit-mask-box-image-source: url(resources/mask.png); |
| clip: rect(76px, 274px, 274px, 76px); |
| filter: blur(20px); |
| } |
| </style> |
| </head> |
| <body> |
| <div></div> |
| </body> |
| </html> |
