| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <style> | |
| div { | |
| width: 200px; | |
| height: 200px; | |
| background-color: green; | |
| border: 20px solid black; | |
| /* Even on missing reference box and overflowing context chose border-box. */ | |
| -webkit-clip-path: circle(50% at 50% 50%); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div><div> | |
| </body> | |
| </html> |