CSS3 border-radius Property
Example
Add rounded borders to a <div> element:
border: 2px solid;
border-radius: 25px;
}
More "Try it Yourself" examples below.
Definition and Usage
The border-radius property is used to add rounded corners to an element.
The border-radius property is a shorthand property for setting the four border-*-radius properties.
If you specify only one value for the border-radius property, this radius will be applied to all 4 corners.
However, you can specify each corner separately if you wish. Here are the rules:
- Four values: first value applies to top-left, second value applies to top-right, third value applies to bottom-right, and fourth value applies to bottom-left corner
- Three values: first value applies to top-left, second value applies to top-right and bottom-left, and third value applies to bottom-right
- Two values: first value applies to top-left and bottom-right corner, and the second value applies to top-right and bottom-left corner
- One value: all four corners are rounded equally
1. Four values - border-radius: 15px 50px 30px 5px:
2. Three values - border-radius: 15px 50px 30px:
3. Two values - border-radius: 15px 50px:
| 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- |
9.0 | 4.0 3.0 -moz- |
5.0 3.1 -webkit- |
10.5 |
CSS Syntax
Note: The four values for each radius 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
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
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;
More Examples
Example
Three examples with rounded corners:
#rcorners1 {
border-radius: 25px;
background: #73AD21;
padding: 20px;
width: 200px;
height: 150px;
}
/* Example 2: Rounded corners for an element with a border */
#rcorners2 {
border-radius: 25px;
border: 2px solid #73AD21;
padding: 20px;
width: 200px;
height: 150px;
}
/* Example 3: Rounded corners for an element with a background image */
#rcorners3 {
border-radius: 25px;
background: url(paper.gif);
background-position: left top;
background-repeat: repeat;
padding: 20px;
width: 200px;
height: 150px;
}
Related Pages
CSS3 tutorial: CSS3 Borders
HTML DOM reference: borderRadius property
