<!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: 'auto' gives container stacking level of '0' (variant 2) in its own context (position: fixed)</title> <meta http-equiv="Content-Style-Type" content="text/css"> <link rel="copyright" href="/~dbaron/legal.html"> <style type="text/css"> div { height: 100px; width: 100px; margin: 0; border: none; padding: 0; position: fixed; top: 0; left: 0; } div#outer { z-index: auto; background: red; } div#inner { background: green; z-index: 0; } </style> </head> <body> <div id="outer"> <div id="inner"></div> </div> </body> </html>