See
Set the corner and shadow properties for a layout cell
1.. In the document window, click the border of the cell that you want to set the corner and shadow properties for.
2.. In the Layout Tables and Cells task pane, click Cell Formatting.
3.. Click Cell Corners and Shadows, and then do one or more of the following:
Change corner properties of a layout cell
a.. Under Corners, do one or more of the following:
a.. To add a custom image to a corner of a cell, click Use custom image, and then click Browse to locate the graphic you want
to use.
b.. To set width or height of a cell corner, in the Width and Height boxes, type the value that you want in pixels.
c.. To add color to a cell corner, click a color from the Color list.
d.. To add color to the border of a cell corner, click a color from the Border color list.
e.. To apply a corner to the top, bottom, or both top and bottom sides of a cell, under Apply, click the options that you
want.
Change shadow properties of a layout cell
a.. Under Shadows, do the following:
a.. To set the width of a drop shadow for a cell, in the Width box, type the value that you want in pixels.
b.. To set the intensity of a drop shadow of a cell, in the Softness box, type the value that you want in pixels.
c.. To add color to a drop shadow of a cell, click a color from the Color list.
d.. To add color to a drop shadow of a cell border, click a color from the Border color list.
e.. To set the side on which a drop shadow falls, under Apply, click the option that you want.
