Used in casting shadows off block-level elements (like divs). .shadow { box-shadow: 3px 3px 5px 6px #ccc; } The horizontal offset of the shadow, positive means the shadow will be on the right of the box, a negative offset will put the shadow on the left of the box.The vertical offset of the shadow, a negative one means the box-shadow will be above the box, a positive one means the shadow will be b