134765 2014-07-09 07:00:47 -0700 GetComputedStyle().top/left return null or auto when top/left use calc() 2022-07-13 17:23:17 -0700 1 1 1 Unclassified WebKit CSS 528+ (Nightly build) Mac (Intel) All RESOLVED CONFIGURATION CHANGED P2 Normal --- 1 l.magne webkit-unassigned bfulgham desandrocodes oldest_to_newest 1021353 0 l.magne 2014-07-09 07:00:47 -0700 Overview: When the css attribute calc() is used on an element to calculate the left and top position, getComputedStyle(element).top and getComputedStyle(element).left return null or auto whereas the render is good. Steps to reproduce: Open attached HTML file. Actual result: On the "calculated result" section, on Safari : 'top:null' and 'left:null' on android browser : 'top:auto' and 'left:auto' Expected result: On the "calculated result" section, we must see all the time 'top:40px' and 'left:60px' Tested Platform: Safari on IOS7, IOS8, Mac OS X 10.10 Yosemite preview 2 and preview 3 AppleWebKit 534.30 on androïd 4.2.2 (samsun galaxy 3) 1247618 1 desandrocodes 2016-11-02 18:35:17 -0700 This issue is still present in Safari 10. See CodePen http://codepen.io/desandro/pen/jVNxOd/ 1883490 2 bfulgham 2022-07-13 17:23:17 -0700 Safari, Chrome, and Firefox all agree on rendering for this test case. I don't believe there is any remaining compatibility issue.