| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| |
| @keyframes play { |
| from { |
| background-size: 5% 100%, 5% 100%; |
| } |
| to { |
| background-size: 50% 100%, 50% 100%; |
| } |
| } |
| |
| button { |
| width: 200px; |
| height: 200px; |
| box-sizing: border-box; |
| border: 1px solid black; |
| background-image: linear-gradient(blue, blue), linear-gradient(blue, blue); |
| background-position: top left, top right; |
| background-size: 45% 100%; |
| background-repeat: no-repeat; |
| animation: play 1000000s -10000s linear; |
| } |
| </style> |
| </head> |
| <body> |
| <p>Should see symmetrical strips of color down both sides.</p> |
| <button></button> |
| </body> |
| </html> |
| |
