We would like to know how to after: Use after class to add border to create shadow effect.
<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
#myDiv {<!-- ww w.j a v a 2s . c om-->
height: 50px;
width: 60px;
border: 2px solid #000;
position: relative;
background-color: #fff;
}
#myDiv:after {
content: "";
z-index: -1;
position: absolute;
left: 5px;
top: 5px;
display: block;
width: 100%;
height: 100%;
background-color: red;
}
</style>
</head>
<body>
<div id="myDiv"></div>
</body>
</html>
The code above is rendered as follows: