How add box shadow to a div inside a container ? (Image included)

the image says what I want to do开发者_如何学JAVA

Either:

• Put some margin on the top one's left side
• Remove overflow-hidden from the grey div
• Postion the top box with position:relative, and increase the z-index

this might help:

{
-moz-border-radius: 5px;
border-radius:5px;

-moz-box-shadow: 3px black;
-webkit-box-shadow:3px black;
box-shadow:3px black;
}