DIV - 2 border colors

by aruanoc

HTML

<div id="mydiv"></div>

CSS

#mydiv{
  height: 60px;
  width: 60px;
  background-color: #ff0000;
  box-shadow: inset 0 0 0 5px #00ff00, inset 0 0 0 10px #0000ff;
}