19477 2012-10-11 15:00:05 +0000 Value Error : content leader(". ") is not a content value : leader(". ") 2013-02-21 23:56:09 +0000 1 1 1 Unclassified CSSValidator CSS 3 CSS Validator PC All NEW P2 normal --- 1 mike dave.null eoconnor www-validator-cvs oldest_to_newest 75987 0 mike 2012-10-11 15:00:05 +0000 Checking http://dev.w3.org/html5/spec-author-view/spec.html causes the CSS validator to report: (line 42) Value Error : content leader(". ") is not a content value : leader(". ") (line 53) Value Error : content leader(". ") is not a content value : leader(". ") The CSS at those lines looks like this: #table-example-1 tbody td:first-child::after { content: leader(". "); } .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") } The "leader" value for the "content" property is part of the "CSS Generated Content for Paged Media" spec: http://www.w3.org/TR/css3-gcpm/#leaders