CSS double border (2 colors) without using outline?

Question

I was wondering what you guys think is the easiest way to get a double border with 2 colors around a div? I tried using border and outline together and it worked in Firefox

Answer 1

A little trick ;)

box-shadow: 
0 0 0 2px #000,
0 0 0 3px #000,
0 0 0 9px #fff,
0 0 0 10px #fff,
0 0 0 16px #000,
0 0 0 18px #000;