CSS3 Box Shadow, only top/right/bottom/left and all
<!DOCTYPE html>
<html>
<head>
<title>Box Shadow</title>
<style>
.box {
height: 150px;
width: 300px;
margin: 20px;
border: 1px solid #ccc;
}
.top {
box-shadow: 0 -5px 5px -5px #333;
}
.right {
box-shadow: 5px 0 5px -5px #333;
}
.bottom {
box-shadow: 0 5px 5px -5px #333;
}
.left {
box-shadow: -5px 0 5px -5px #333;
}
.all {
box-shadow: 0 0 5px #333;
}
</style>
</head>
<body>
<div class="box top"></div>
<div class="box right"></div>
<div class="box bottom"></div>
<div class="box left"></div>
<div class="box all"></div>
</body>
</html>