CSS3 Rounded Corners

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.



CSS3 border-radius Property
With CSS3, you can give any element "rounded corners", by using the border-radius property.

Here are three examples:

1. Rounded corners for an element with a specified background color:



2. Rounded corners for an element with a border:



3. Rounded corners for an element with a background image:




Example

#rcorners1 {
    border-radius: 25px;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}
#rcorners2 {
    border-radius: 25px;
    border: 2px solid #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}
#rcorners3 {
    border-radius: 25px;
    background: url(paper.gif);
    background-position: left top;
    background-repeat: repeat;
    padding: 20px;
    width: 200px;
    height: 150px;
}

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CSS3 border-radius - Specify Each Corner
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

Here are three examples:

1. Four values - border-radius: 15px 50px 30px 5px:



2. Three values - border-radius: 15px 50px 30px:



3. Two values - border-radius: 15px 50px:



Here is the code:

Example

#rcorners4 {
    border-radius: 15px 50px 30px 5px;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}
#rcorners5 {
    border-radius: 15px 50px 30px;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}
#rcorners6 {
    border-radius: 15px 50px;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}

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You could also create elliptical corners:

Example

#rcorners7 {
    border-radius: 50px/15px;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}
#rcorners8 {
    border-radius: 15px/50px;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}
#rcorners9 {
    border-radius: 50%;
    background: #73AD21;
    padding: 20px;
    width: 200px;
    height: 150px;
}

Try it Yourself »

CSS3 Rounded Corners Properties

Property	Description
border-radius	A shorthand property for setting all the four border-*-*-radius properties
border-top-left-radius	Defines the shape of the border of the top-left corner
border-top-right-radius	Defines the shape of the border of the top-right corner
border-bottom-right-radius	Defines the shape of the border of the bottom-right corner
border-bottom-left-radius	Defines the shape of the border of the bottom-left corner