This page demonstrates how to apply the CSS3 box-shadow style.
Use the input controls to specify the background color of the box in the
Preview window. You can then apply a box shadow by specifying whether to
place the shadow outside the box (default) or within (inset) and setting
shadow color, offset in the horizontal and vertical direction, blurring
size, and shadow spread. All distances are expressed in pixels.
The corresponding CSS3 style rule is displayed in the Style box.