Description

The parameters for radial-gradient are: radial-gradient(position, size and shape, color stops );

Position: where to place the center of the gradient. You can use keywords (top, left, center, right, bottom) or numeric values such as (%, px, em) to specify position.
Defaults to center center or 50% 50% if not given.

Size and Shape: Here you can change the dimensions of the gradient to cause a ellipse or a circle.

Color stops: Defines where each color should be strongest.
Defaults if not specified, to 0% the center for the first color, and 100% for the second.

Live Example
Play with the code in the textarea below.

Values
radial-gradient(position, size and shape, colour stops );
Introduced in CSS version
3
Inherited
N/A
Browser Support
BrowsersIEFirefoxSafariOperaChrome
Versions10-moz--webkit--o--webkit-

See the full list CSS properties and browser support: CSS Properties