| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <style> | |
| div { | |
| width: 220px; | |
| height: 220px; | |
| background-color: green; | |
| -webkit-clip-path: polygon(evenodd, 0 0, 200px 0, 200px 200px, 0 200px, 0 20px, 180px 20px, 180px 180px, 20px 180px, 20px 20px, 0 20px); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div> | |
| </body> | |
| </html> |