| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS Motion Path: ray paths with contain</title> |
| <style> |
| #container { |
| width: 300px; |
| height: 300px; |
| } |
| #target { |
| position: relative; |
| left: 30px; |
| top: 40px; |
| width: 10px; |
| height: 10px; |
| background-color: lime; |
| /* ray length is sqrt(30^2 + 40^2); contain does -max(10, 10) / 2; */ |
| /* the result length is 45px. angle is 180deg; */ |
| /* 5 is origin shift. */ |
| transform: translate(-5px, 40px); |
| } |
| </style> |
| </head> |
| <body> |
| <div id="container"> |
| <div id="target"></div> |
| </div> |
| </body> |
| </html> |
