STR: 1. Load attached testcase EXPECTED RESULTS: No red should be visible. (The lime rect's CSS transform should rotate it around its center point, per its "transform-origin" property.) ACTUAL RESULTS: Red is visible. My "transform-origin" doesn't seem to have had any effect on the lime rect -- it's rotating about its 0,0 point instead of about its 50%,50% point. Devtools show that the computed "transform-origin" is to 0,0 -- so, it looks like the percentage isn't resolving against anything. http://dev.w3.org/csswg/css-transforms/#transform-origin-property says: "Percentages: refer to the size of bounding box" Chrome 36 gives me EXPECTED RESULTS. Firefox Nightly gives me ACTUAL RESULTS.
Created attachment 8477448 [details] testcase 1 Here's the testcase, though I see this is a dupe (thanks, longsonr). (I think I put too much trust in enter_bug.cgi's possible-dupe-finder UI. :))