HTML Utopia: Designing Without Tables Using CSS

B.69. -moz-border-radius

Mozilla-based browsers (including Netscape 6 or later) support a number of nonstandard CSS properties that were implemented for the skinning engines of those browsers. These properties all begin with the prefix -moz- to indicate their nonstandard nature. Several of these properties are useful for general Web site design as well, and have equivalents in current drafts of future CSS standards.

-moz-border-radius is a shorthand property that lets you add rounded corners to the border of an element by setting the radius to use for each of the corners of the box. The content of the box is not clipped by these rounded corners, so you'll usually want to define an appropriate amount of padding to prevent overlaps. The background ...