<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html40/strict.dtd"> <!-- vim:sw=4:et:ts=4 --> <html lang="en-US"> <head> <title>z-index testcase: '0' stacks by document order (position: absolute)</title> <meta http-equiv="Content-Style-Type" content="text/css"> <link rel="copyright" href="/~dbaron/legal.html"> <style type="text/css"> html, body, div { margin: 0; border: none; padding: 0; } div { height: 100px; width: 100px; } div#two { top: 0; left: 0; position: absolute; z-index: 0; } div#one { background: red; } div#two { background: green; } </style> </head> <body> <div id="one"></div> <div id="two"></div> </body> </html>