double inner box shadow
<!DOCTYPE html>
<html>
<head>
<title>box shadow</title>
<style>
.item {
background: orange;
border: solid 1px blue;
box-shadow: inset 0 0 0 1px red, inset 0 0 0 2px green; /* nesting inset shadow*/
height: 100px;
width: 100px;
}
</style>
</head>
<body>
<div class="item"> </div>
</body>
</html>