That is something separate we are hoping for as part of an SVG filters for other (non-SVG) elements in CSS property. It's been a bit slow to come to fruition. On May 2, 2010, at 4:05 AM, Glen wrote: > I would also like this to be included ... I guess it's too late. :-( > > There are quite a few people who have asked about this ("background opacity" on Google). > > I can imagine fading a button's background (gradient or gradient image) from "less than opaque" to fully opaque on hover. > > The same for border-opacity. > > If it's impossible to include these features in CSS 3, might they be included in "3.1"? > > Glen. >> Patrick H. Lauke wrote: >> > First time dipping my toe in this list, and appreciate that it's >> > probably far too late for last call, but... >> > >> > One feature I would have really loved to see is the ability to specify >> > opacity for background images. I know this is technically possible by >> > using formats such as PNG-24 with encoded alpha information, but I could >> > envisage an actual CSS property to allow for further flexibility >> > (particularly when layering multiple backgrounds, or when wanting to >> > change background opacity depending on user interaction or similar). >> > >> > If it's already too late to suggest anything new like this, could this >> > be taken into consideration for a follow-up point release perhaps? >> >> The CSS Working Group has resolved not to add 'background-opacity' >> to the CSS3 Backgrounds and Borders module. We are considering this >> functionality for the future (e.g. see discussion about filters from >> <http://lists.w3.org/Archives/Public/www-style/2009Nov/0252.html>) >> but it likely will not be expressed as a 'background-opacity' property. >> >> Please let me know if this is acceptable. :) >> >> ~fantasai >> >
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