- From: Gérard Talbot <css21testsuite@gtalbot.org>
- Date: Wed, 11 Jan 2012 18:57:49 -0800
- To: "Arron Eicholz" <arron.eicholz@microsoft.com>
- Cc: "Public CSS test suite mailing list" <public-css-testsuite@w3.org>
Arron, [nightly-unstable] http://test.csswg.org/suites/css2.1/nightly-unstable/html4/data-alignment-003.htm [RC6] http://test.csswg.org/suites/css2.1/20110323/html4/data-alignment-003.htm line 8 <meta name="assert" content="Cell data in a row can be horizontally and vertically aligned." /> line 9 <style type="text/css"> line 10 tr line 11 { line 12 vertical-align: middle; line 13 text-align: center; line 14 } The meta assert text and the CSS code assume (and more or less state, without nuance, without necessary precautions) that vertical-align can apply to tr elements and, because it may seem to apply, td cells will be vertically aligned accordingly. But, that is not so. The given code works because most, if not all, user agents have in their default user agent stylesheet thead, tbody, tfoot { vertical-align: middle } td, th, tr { vertical-align: inherit } /* Appendix D. Default style sheet for HTML 4 http://www.w3.org/TR/CSS21/sample.html */ or they may have td, th { vertical-align: middle } /* according to Internet Explorer User Agent Style Sheets http://www.iecss.com/ */ Setting directly 'vertical-align: middle' into the td rule would be okay. What is currently missing in the test code is an explicit inheritance in the test code (and not relying on the user agent default stylesheet) because vertical-align does *not* apply to tr elements and vertical-align is not inherited. Proposed correction ------------------- 10 tr 11 { 12 text-align: center; 13 } 14 td 15 { 16 vertical-align: middle; 17 width: 10em; 18 height: 10em; 19 border: solid; 20 } Another idea would be to add 'vertical-align: inherit' (explicit and active inheritance from tr to td in author stylesheet) into the td rule of current code. The text assert could also be a bit more careful by stating that vertically aligning cell data can only be done at the cell level and not at the row level... and be perfectly coherent with the spec and http://test.csswg.org/suites/css2.1/nightly-unstable/html4/vertical-align-applies-to-004.htm regards, Gérard -- Contributions to the CSS 2.1 test suite: http://www.gtalbot.org/BrowserBugsSection/css21testsuite/ CSS 2.1 Test suite RC6, March 23rd 2011: http://test.csswg.org/suites/css2.1/20110323/html4/toc.html CSS 2.1 test suite harness: http://test.csswg.org/harness/ Contributing to to CSS 2.1 test suite: http://www.gtalbot.org/BrowserBugsSection/css21testsuite/web-authors-contributions-css21-testsuite.html
Received on Thursday, 12 January 2012 02:58:30 UTC