Circle at Center

Circle at Top

Circle at Left

Circle at Bottom

Circle at Right

Ellipse at Center

Ellipse at Top

Ellipse at Left

Ellipse at Bottom

Ellipse at Right

Specifying Circle pixel size

Specifying Ellipse % size

Example of Color Stops

Circle at closest-side

Circle at farthest-side

Circle at closest-corner

Circle at farthest-corner

Repeating Radial Gradient

Repeating Linear Gradient