How to work with Add Border
To work with Add Border
To add borders to an image:
To add borders equally on all sides, select the "Symmetric" check box. To add borders of unequal width, leave the check box unchecked.
Enter the border size in pixels in the four boxes. If you have selected the Symmetric option, the boxes are linked—changing the width in one box automatically changes the width in the others.
Click OK to close the dialog box and add the borders to the image.