CSS3 border-top-left-radius Property
Example
Add a rounded border to the top-left corner of a <div> element:
div
{
border: 2px solid;
border-top-left-radius: 2em;
}
Try it yourself »
Definition and Usage
The border-top-left-radius property defines the shape of the border of the top-left corner.
Tip: This property allows you to add rounded borders to elements!
| Default value: | 0 |
|---|---|
| Inherited: | no |
| Animatable: | yes. Read about animatable Try it |
| Version: | CSS3 |
| JavaScript syntax: | object.style.borderTopLeftRadius="25px" Try it |
Browser Support
The numbers in the table specify the first browser version that fully supports the property.
Numbers followed by -webkit- or -moz- specify the first version that worked with a prefix.
| Property | ||||||
|---|---|---|---|---|---|---|
| border-top-left-radius | 5.0 4.0 -webkit- |
12.0 | 9.0 | 4.0 3.0 -moz- |
5.0 3.1 -webkit- |
10.5 |
CSS Syntax
border-top-left-radius: length|% [length|%]|initial|inherit;
Note: The two length or percentage values of the border-top-left-radius properties define the radii of a quarter ellipse that defines the shape of the corner of the outer border edge. The first value is the horizontal radius, the second the vertical radius. If the second value is omitted it is copied from the first. If either length is zero, the corner is square, not rounded. Percentages for the horizontal radius refer to the width of the border box, whereas percentages for the vertical radius refer to the height of the border box.
Property Values
| Value | Description | Play it |
|---|---|---|
| length | Defines the shape of the top-left corner | Play it » |
| % | Defines the shape of the top-left corner in % | Play it » |
| initial | Sets this property to its default value. Read about initial | Play it » |
| inherit | Inherits this property from its parent element. Read about inherit |
Related Pages
CSS3 tutorial: CSS3 Borders
HTML DOM reference: borderTopLeftRadius property
