CSS border-radius Property
Example
Add rounded corners to two <div> elements:
#example1 {
border: 2px solid red;
border-radius: 25px;
}
#example2 {
border: 2px solid red;
border-radius: 50px
20px;
}
Try it Yourself »
More "Try it Yourself" examples below.
Definition and Usage
The border-radius property defines the radius of the
element's corners.
Tip: This property allows you to add rounded corners to elements!
This property can have from one to four values. Here are the rules:
Four values - border-radius: 15px 50px 30px 5px; (first value applies to top-left corner, second value applies to top-right corner, third value applies to bottom-right corner, and fourth value applies to bottom-left corner):
Three values - border-radius: 15px 50px 30px; (first value applies to top-left corner, second value applies to top-right and bottom-left corners, and third value applies to bottom-right corner):
Two values - border-radius: 15px 50px; (first value applies to top-left and bottom-right corners, and the second value applies to top-right and bottom-left corners):
One value - border-radius: 15px; (the value applies to all four corners, which are rounded equally:
| 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
border-radius: 1-4 length|% / 1-4 length|%|initial|inherit;
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 | Demo |
|---|---|---|
| length | Defines the shape of the corners. Default value is 0. Read about length units | Demo ❯ |
| % | Defines the shape of the corners in % | Demo ❯ |
| initial | Sets this property to its default value. Read about initial | |
| inherit | Inherits this property from its parent element. Read about inherit |
More Examples
Example
Set rounded corners for an element with a background color:
#rcorners1 {
border-radius: 25px;
background: #73AD21;
padding: 20px;
width: 200px;
height: 150px;
}
Try it Yourself »
Example
Set rounded corners for an element with a border:
#rcorners2 {
border-radius: 25px;
border: 2px solid #73AD21;
padding: 20px;
width: 200px;
height: 150px;
}
Try it Yourself »
Example
Set 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;
}
Try it Yourself »
Example
Also notice this:
#example1 {
border-radius: 2em / 5em;
}
/* is equivalent to:
border-top-left-radius: 2em 5em;
border-top-right-radius: 2em 5em;
border-bottom-right-radius: 2em 5em;
border-bottom-left-radius: 2em 5em; */
#example2 {
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; */
Try it Yourself »
Related Pages
CSS tutorial: CSS Rounded Corners
HTML DOM reference: borderRadius property