| Syntax | <dimension2d> | initial | inherit |
| Initial value | 0 |
| Applies to | all elements |
| Inheritance | false |
| Type of computed value | UINT |
| Functions |
element::setBorderTopLeftRadius() element::getBorderTopLeftRadiusStr() element::getBorderTopLeftRadius() |
| <dimension2d> | One or two length values. |
| initial | Keyword. Sets the property to its initial value. |
| inherit | Keyword. Inherits the value from the parent element. |