You can access the Box Shadow editor and Text Shadow editor from the Styles Pane. Using the Box-Shadow editor as an example, you can control:

The shadow type - Outset or inset

The X offset - The horizontal shadow position

The Y offset - The vertical shadow position

The Blur - Distance of the blur

The Spread - The size of the shadow

Changes you make in the visual shadow editor also apply to the Styles Pane CSS.