On Sep 3, 2010, at 12:08 AM, Thierry Koblentz wrote: >> No, not really. The spec is about both. >> Unless the root element has a background, the background is propagated >> to the viewport. If no background-repeat is specified, the image will >> then be painted all over the space/canvas. If background-repeat is >> specified (no-repeat), the space created by <body> (it's computed >> height) will be used for background-position - the root element is not >> taller than the body element, unless a height on the root element is >> specified. >> >> see 4th paragraph under 'The background': >> http://www.w3.org/TR/CSS21/colors.html#background > > This part below makes a lot of sense regarding how browsers paint a > positioned background when there is no background for <html>. > >> If background-repeat is specified (no-repeat), the space created by <body> > (it's computed >> height) will be used for background-position > > But are you quoting the spec? Because I can't find the above in that section > (14.2). > I can't find any mention of "background-repeat" in these 4 paragraphs.
Perhaps the CSS3 Backgrounds and Borders module is a little bit more clear ? http://www.w3.org/TR/css3-background/#special-backgrounds You'd have to read the whole section on backgrounds for the definitions, particularly 'background painting area' vs 'background positioning area'. Took me 3 readings before I finally got it. Those specs should be written in French… much easier :-) And remember that that 4th paragraph in CSS2.1:14.2 defines a special case, an exception to the rules. Unless specified the rules listed lower in 14.2 apply. The wording in the CSS3 module make that more obvious. > Actually, what I find in there is kind of confusing (may be *you* should > write the spec ;) lol :-). That would be a disaster. I'm not a spec writer. 'images' is my thing, whatever 'images' may mean. > "Such backgrounds must also be anchored at the same point as they would be > if they were painted only for the root element." That says it all, isn't it ? The root element is no taller than its tallest static, inflow descendant (even given the slightly ambiguous case(s) mentioned by Alan) - :root != canvas. Philippe --- Philippe Wittenbergh http://l-c-n.com/ ______________________________________________________________________ css-discuss [cs...@lists.css-discuss.org] http://www.css-discuss.org/mailman/listinfo/css-d List wiki/FAQ -- http://css-discuss.incutio.com/ List policies -- http://css-discuss.org/policies.html Supported by evolt.org -- http://www.evolt.org/help_support_evolt/
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