Bert Bos,
CSS contactLast updated $Date: 2009/04/14 16:44:34 $ GMT
(This page uses CSS style sheets)
W3C and the CSS Working Group publish information about the specifications under development in various ways. This page is the working group's weblog (blog). Other places to find information are the “current work” page, the www-style mailing list.
ex definition to be changed to use the parent's element font size if set on font-size (just like em) Rationale: Avoid infinite loops in the spec. :)0.5em fallback in CSS3 Values for when ex height cannot be found.The CSS Working Group just published a Last Call for Comments Working Draft of CSS Backgrounds and Borders Level 3. Please review the draft and send your feedback. We'll be accepting comments through 17 November 2009. (Note that feature requests are likely to be deferred to CSS4.) The best place for feedback is the CSSWG's official mailing list www-style@w3.org, but we'll also look at any comments posted (or linked to) from the cross-post on CSS3.info.
There are a couple issues we're specifically looking for feedback on:
The round option for background-repeat
and border-image-repeat resizes images to fit the nearest
whole number of tiles, rather than always scaling up or always scaling
down. Rounding keeps closer to the intended size and, in the case
where one dimension is fixed (e.g. in ‘border-image’), keeps the image
closer to the intended aspect ratio. This is almost certainly the best
solution for vector images and high-resolution raster images. However,
if the given image is a low-resolution raster image, it will require
interpolating pixels, which can look bad. See "Rounding Extremes" for
illustrations.
The workaround is to specify a higher-resolution image (e.g. by shrinking from the original with background-size or border-image-width). Possible spec solutions include introducing a separate keyword that always scales down, and changing the algorithm so that we force scaling down whenever interpolation would be required for scaling up. So the options here are
round, but I want an extra keyword to force downscaling in all cases (including vector images) because [...].Please comment on what you prefer and why. (The more specific you can be "for example, this image that I would want to use [...]", the easier it will be for us to understand your point.)
The previous
draft included two properties for controlling behavior at box
breaks (line breaks / column breaks / page breaks):
border-break for controlling whether the border is drawn
at the break, and background-break for controlling
whether the background is drawn for each box individually or for the
whole element as if it were broken after painting.
Hyatt suggested merging the two, so the current draft has a single
box-break property instead. The two values mean,
basically, "render backgrounds and borders for this box, and then
slice it up" and "break the box and then render backgrounds and
borders for each box individually". The value names aren't
particularly clear, however, so we were wondering if anyone has better
ideas.
So take a look at the new draft and send us your comments! This is your last chance to give feedback on this module: if all goes well, we'll be publishing the Candidate Recommendation in time for Christmas, and given the state of experimental implementations right now, I expect things to move rapidly from there.
column-rule-color to CSS3 Color vs CSS2.1.text-justify property; the issue is deferred to the next active editor.round keyword for background-repeat and border-image-repeat scales to the nearest whole number of tiles. This will be marked as an issue for feedback in case people prefer different behavior or would like additional controls (e.g. round-up or round-down) keywords).border-radius. They refer to a percentage of the corresponding dimension of the box (so border-radius: 50% gives an oval).box-shadow from CSS Backgrounds and Borders Level 3: work on box-shadow outside the module for the time being, possibly re-merge with draft later. Rationale: drop-shadows seem to need a lot more discussion, but the rest of the draft is ready to move on.border-image resizes to fit small boxes the same way as border-radius (proportional in both dimensions)Short meeting this time. We just reviewed the status of the 2007 Snapshot (Beijing Profile), 2.1 issues, and TPAC plans.