Rounded corners with CSS3

The CSS3 border-radius property allows web developers to easily utilise rounder corners in their design elements, without the need for corner images or the use of multiple div tags, and is perhaps one of the most talked about aspects of CSS3.

Since first being announced in 2005 the boder-radius property has come to enjoy widespread browser support (although with some discrepancies) and, with relative ease of use, web developers have been quick to make the most of this emerging technology.

For Firefox, Safari/Chrome, Opera and IE9. Example:

#example1 {
-moz-border-radius: 15px;
border-radius: 15px;
} 

W3C Specification border-radius border-top-left-radius border-top-right-radius border-bottom-right-radius border-bottom-left-radius Mozilla Implementation -moz-border-radius -moz-border-radius-topleft -moz-border-radius-topright -moz-border-radius-bottomright -moz-border-radius-bottomleft

The Syntax:

border-*-*-radius: [  | <%> ] [  | <%> ]? 

More examples:

#Example_A {
height: 65px;
width:160px;
-moz-border-radius-bottomright: 50px;
border-bottom-right-radius: 50px;
}

#Example_B {
height: 65px;
width:160px;
-moz-border-radius-bottomright: 50px 25px;
border-bottom-right-radius: 50px 25px;
}

#Example_C {
height: 65px;
width:160px;
-moz-border-radius-bottomright: 25px 50px;
border-bottom-right-radius: 25px 50px;
}

#Example_D {
height: 5em;
width: 12em;
-moz-border-radius: 1em 4em 1em 4em;
border-radius: 1em 4em 1em 4em;
}

#Example_E {
height: 65px;
width:160px;
-moz-border-radius: 25px 10px / 10px 25px;
border-radius: 25px 10px / 10px 25px;
}

#Example_F {
height: 70px;
width: 70px;
-moz-border-radius: 35px;
border-radius: 35px;
}