- From: Philip TAYLOR <P.Taylor@Rhul.Ac.Uk>
- Date: Mon, 26 Oct 2009 10:54:29 +0000
- To: www-validator-css@w3.org
- CC: Ryan Foster <rrf5000@psu.edu>
Intrigued by the following bug report from Ryan Foster, I read the CSS 3 spec. on units, and read -- to my surprise -- the following : em the font size of the element (or, to the parent element's font size if set on the 'font-size' property) ex the x-height of the element's font Is there any reason why "ex" does not also reference the parent element's font size if set on the 'font-size' property ? Philip TAYLOR -------- Ryan Foster wrote: > When set to CSS3, the CSS Validator states: > > Value Error : min-width > <http://jigsaw.w3.org/css-validator/nullvisudet.html#propdef-min-width> > Unknown dimension 15ch > > While the CSS3 Values and Units <http://www.w3.org/TR/css3-values/> > draft specification states <http://www.w3.org/TR/css3-values/#relative0>: > > ch: The width of the "0" (ZERO, U+0030) glyph found in the font for > the font size used to render. If the "0" glyph is not found in the > font, the average character width may be used. How is the "average > character width" found? > > The Validator should mark "ch" as a valid unit when set to CSS3. The > same error occurs in the development version > (http://qa-dev.w3.org:8001/css-validator/).
Received on Monday, 26 October 2009 10:55:12 UTC