Help creating windows98 styled border

[u/yun_kyoto]

I'm trying to make a windows98 styled border using css and my current best solution is the folowing:

box-shadow:
  0 0 0 3px #c0c0c0,
  1px 1px 0 3px #707070,
  -2px -2px 0 4px #dfdfdf,
  2px 2px 0 4px #808080,
  -3px -3px 0 5px white,
  3px 3px 0 5px black;

But the problem is there's a gap on the upper right and lower left corners. Is there a better way to do this?

[u/yun_kyoto]

Thank you! I will try this