58445 2011-04-13 08:53:40 -0700 [css3-background] Support percentages in border-width 2011-05-18 17:31:11 -0700 1 1 1 Unclassified WebKit CSS 528+ (Nightly build) PC OS X 10.5 RESOLVED WONTFIX http://jsfiddle.net/leaverou/DFLHw/ P2 Normal --- 0 lea webkit-unassigned davidbarr mikelawther oldest_to_newest 384920 0 lea 2011-04-13 08:53:40 -0700 Backgrounds & Borders allows for percentages in border-width and they refer to the width of the containing block: http://www.w3.org/TR/css3-background/#the-border-width However, as the testcase demonstrates, they are not yet supported in Webkit. 405533 1 davidbarr 2011-05-17 23:30:15 -0700 > http://www.w3.org/TR/css3-background/#the-border-width As at the time of this comment, that draft is labeled 'W3C Candidate Recommendation 15 February 2011'. Whereas in the 'Editor's Draft 17 May 2011': http://dev.w3.org/csswg/css3-background/#the-border-width ... the prose about percentages for border widths has been removed. See this thread on www-style for some context: http://lists.w3.org/Archives/Public/www-style/2011May/0371.html 406135 2 mikelawther 2011-05-18 17:31:11 -0700 Closing as the CSS editor indicates this is not a planned feature. Please reopen if that changes.