CSS3 border-radius Property
Example
Add rounded borders to a <div> element:
div
{
border: 2px solid;
border-radius: 25px;
}
Try it yourself »
Definition and Usage
The border-radius property is a shorthand property for setting the four border-*-radius properties.
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.borderRadius="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-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-radius: 1-4 length|% / 1-4 length|%|initial|inherit;
Note: The four values for each radii are given in the order top-left, top-right, bottom-right, bottom-left. If bottom-left is omitted it is the same as top-right. If bottom-right is omitted it is the same as top-left. If top-right is omitted it is the same as top-left.
Property Values
| Value | Description | Play it |
|---|---|---|
| length | Defines the shape of the corners. Default value is 0 | Play it » |
| % | Defines the shape of the corners 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 |
Example 1
border-radius:2em;
is equivalent to:
border-top-left-radius:2em;
border-top-right-radius:2em;
border-bottom-right-radius:2em;
border-bottom-left-radius:2em;
Example 2
border-radius: 2em 1em 4em / 0.5em 3em;
is equivalent to:
border-top-left-radius: 2em 0.5em;
border-top-right-radius: 1em 3em;
border-bottom-right-radius: 4em 0.5em;
border-bottom-left-radius: 1em 3em;
Related Pages
CSS3 tutorial: CSS3 Borders
HTML DOM reference: borderRadius property
