<!DOCTYPE html> <!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <html lang="en-US" class="reftest-wait"> <head> <meta charset="UTF-8"> <title>CSS Test: CSS display:contents; visibility:hidden</title> <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=907396"> <link rel="help" href="http://dev.w3.org/csswg/css-display"> </head> <body style="color: red"> <div id="x" style="display:contents; visibility: hidden; color: green"> Line 1 </div><script type="text/javascript"> document.body.offsetWidth; document.getElementById("x").style.visibility = "visible"; document.body.offsetWidth; document.documentElement.className = ''; </script> </body> </html>