103681 2012-11-29 15:52:45 -0800 non HTMLElement documentElement ignores display: none 2012-11-30 16:15:01 -0800 1 1 1 Unclassified WebKit CSS 528+ (Nightly build) All All RESOLVED FIXED HasReduction P2 Normal --- 103475 1 esprehn webkit-unassigned oldest_to_newest 779552 0 esprehn 2012-11-29 15:52:45 -0800 If you replace the documentElement with a non-html element and then set it to display: none we ignore it. ex. <iframe id="doc"></iframe> <script> var doc = document.getElementById('doc').contentDocument; var root = doc.implementation.createDocument().createElement('not-a-real-element'); doc.replaceChild(root, doc.documentElement); root.appendChild(document.createElement('style')).textContent = 'not-a-real-element { display: none }'; root.appendChild(document.createElement('p')).textContent = 'Should not be visible'; </script> 779565 1 esprehn 2012-11-29 16:07:40 -0800 This is fixed by Bug 103475.