I have a square box, that I need to create a dual lined border of differing widths.
I've selected the shape and then done a 10px
stroke inside. Now I want to add a 2nd rectangle of 5px
width that is 5px
inside the outer stroke on all sides.
For clarity, this is one 10px
line around the full edge of the background shape. Then a 2nd line of 5px
which has a 5px
gap between it and the outer stroke.
Any pointers on how to achieve this second stroke accurately will be greatly appreciated.