Shadow is an effect that adds to the appearance of your web buttons.
Example of buttons with shadow:
In order to add shadow to your web buttons, simply define the horizontal and vertical options to edit the position or "where" the shadow will be placed according to your preference. Then, select the color you want the shadow to have from the color picker. The most commonly selected color is the "Black" one as it is the most shadow representative. Finally, define the spread and opacity properties to customize the intensity and blur of the shadow implementation in your web button.
In order to disable the shadow effect from your button, simply deactivate the "Enable Button Shadow" check box and all button shadows customization options will remain inoperative.