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The CSS Working Group (Cascading Style Sheets Working Group) is a working group created by the World Wide Web Consortium (W3C) in 1997, to tackle issues that had not been addressed with CSS level 1. As of December 2022, the CSSWG had 147 members.
The first CSS specification to become an official W3C Recommendation is CSS level 1, published on 17 December 1996. Håkon Wium Lie and Bert Bos are credited as the original developers. [44] [45] Among its capabilities are support for Font properties such as typeface and emphasis; Color of text, backgrounds, and other elements
The first comprehensive draft of a grid layout for CSS was created by Phil Cupp at Microsoft in 2011 and implemented in Internet Explorer 10 behind a -ms-vendor prefix.The syntax was restructured and further refined through several iterations in the CSS Working Group, led primarily by Elika Etemad and Tab Atkins Jr.
In 1996, CSS [10] introduced margin, border and padding for many more elements. It adopted a definition width in relation to content, border, margin and padding similar to that for a table cell. [11] This has since become known as the W3C box model. At the time, very few browser vendors implemented the W3C box model to the letter.
The W3C specifications SVG and CSS level 3 module Color eventually adopted the X11 list with some changes. [7] The present W3C list is a superset of the 16 "VGA colors" defined in HTML 3.2 and CSS level 1. One notable difference between X11 and W3C is the case of "Gray" and its variants.
Media queries is a feature of CSS 3 allowing content rendering to adapt to different conditions such as screen resolution (e.g. mobile and desktop screen size). It became a W3C recommended standard in June 2012, [ 1 ] and is a cornerstone technology of responsive web design (RWD).
CSS Flexible Box Layout, commonly known as Flexbox, [2] is a CSS web layout model. [4] It is in the W3C 's candidate recommendation (CR) stage. [ 2 ] The flex layout allows responsive elements within a container to be automatically arranged depending on viewport (device screen) size.
Simmons is a member of the CSS Working Group created by the W3C since 2016. [1] [14] She joined CSS WG when working for Mozilla and continued as an Apple employee. [15] [14] She helped prepare and communicate CSS grid layout specification (level 1 and 2), [16] [17] CSS Containment Module Level 3, [18] CSS Cascading and Inheritance (level 5 and ...