28487 2015-04-14 09:21:23 +0000 Checking scrolling box of body for scrollTop doesn't match Gecko 2015-04-14 09:35:21 +0000 1 1 1 Unclassified CSS CSSOM View unspecified PC All RESOLVED FIXED P2 normal --- 1 zcorpan zcorpan bzbarsky rbyers public-css-bugzilla oldest_to_newest 119488 0 zcorpan 2015-04-14 09:21:23 +0000 Consider http://software.hixie.ch/utilities/js/live-dom-viewer/saved/3498  <html style="overflow:auto; background:url(image) no-repeat center center"> <body style="overflow:auto; height:1000px;" onload="document.body.scrollTop = 400">x The body doesn't have a scrolling box (since it doesn't overflow, so it doesn't have a scrolling mechanism). So it should scroll the viewport per spec. But Gecko doesn't do that. I think it checks the overflow property without considering if it actually overflows. That seems simpler/better. 119489 1 zcorpan 2015-04-14 09:35:21 +0000 https://github.com/w3c/csswg-drafts/commit/b02ad91d090e4518b153bf29582cff50c4472a01