<html> <head> <style type="text/css"> #parent { -moz-transform-style: preserve-3d; } #one { width: 100px; height: 100px; background-color: #00FF00; -moz-transform: translatez(10px); } #two { width: 100px; height: 100px; background-color: red; -moz-transform: translatez(-10px) translatey(-50px); } </style> </head> <body> <div id="parent"> <div id="one"></div> <div id="two"></div> </div> </body> </html>