| <!doctype html> | |
| <html> | |
| <head> | |
| <style> | |
| body { | |
| background-color: #808080; | |
| background-image: | |
| linear-gradient(45deg, #000000 25%, transparent 25%), | |
| linear-gradient(-45deg, #000000 25%, transparent 25%), | |
| linear-gradient(45deg, transparent 75%, #000000 75%), | |
| linear-gradient(-45deg, transparent 75%, #000000 75%); | |
| background-size:80px 80px; | |
| background-position: 0 0, 0 80px, 80px -80px, -80px 0px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |