This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, and the Future of CSS syndicator.
Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
space
from border-image-repeat
since not implemented.
box-decoration-break
from CSS3 Backgrounds to CSS3 Fragmentation.
Discussed use cases and rationale for ::placeholder
pseudo-element vs. :placeholder
pseudo-class. Need for pseudo-element seems to be largely driven by the need to style the text color with opacity
so as to make it “fade” regardless of the input’s color scheme. Pseudo-class allows styling the entire input element in response to the placeholder’s visibility.
Options considered included:
::value
pseudo-element.
fill-opacity
to address fading.
Resolved: :placeholder-shown
pseudo-class and ::placeholder
pseudo-element adopted.
ethiopic-numeric
in spec, but mark at risk.
var-
prefix is lowercase and case-sensitive.
@supports
is not affected by limitations imposed by user prefs or system limitations.
@supports all
.