17780 2012-07-14 13:33:24 +0000 Can an internal table element establish a stacking context? 2012-12-04 00:51:12 +0000 1 1 1 Unclassified CSS CSS Level 2 unspecified All Windows 3.1 NEW P2 normal --- 1 antonsforums bert public-css-bugzilla oldest_to_newest 69985 0 antonsforums 2012-07-14 13:33:24 +0000 Reported by Anton Prowse Can an internal table element establish a stacking context? Nothing in the spec says that it can't; but no UA seems to permit this, and indeed if they can then the painting algorithm in Appendix E needs revising. Note that 9.3.1 (The 'position' property) says: # The effect of 'position:relative' on table-row-group, # table-header-group, table-footer-group, table-row, # table-column-group, table-column, table-cell, and # table-caption elements is undefined. so in CSS21 it seems undefined whether an internal table element may establish a stacking context (since the only stacking contexts in CSS21 are established by the root element and by elements with integer 'z-index', a property which itself only applies to positioned elements). It would be useful to decide whether it is similarly undefined for stacking contexts arising from CSS3. Converstation begins: Bug description: http://lists.w3.org/Archives/Public/www-style/2012Jun/0409.html Follow-up: http://lists.w3.org/Archives/Public/www-style/2012Jun/0424.html