CSS

====CSS 3====
{{redirect|CSS3}}

Unlike CSS&nbsp;2, which is a large single specification defining various features, CSS&nbsp;3 is divided into several separate documents called "modules". Each module adds new capabilities or extends features defined in CSS&nbsp;2, preserving backward compatibility. Work on CSS level 3 started around the time of publication of the original CSS&nbsp;2 recommendation. The earliest CSS&nbsp;3 drafts were published in June 1999.<ref name="World Wide Web Consortium">{{cite web|url=https://www.w3.org/Style/CSS/specs|title=Descriptions of all CSS specifications|publisher=[[World Wide Web Consortium]]|date=18 February 2011|access-date=3 March 2011|first1=Bert|last1=Bos|author-link1=Bert Bos|archive-url=https://web.archive.org/web/20110331092216/https://www.w3.org/Style/CSS/specs|archive-date=31 March 2011|url-status=live}}</ref>

Due to the modularization, different modules have different stability and statuses.<ref>{{cite web|url=https://www.w3.org/Style/CSS/current-work|title=CSS current work|publisher=[[World Wide Web Consortium]]|date=26 February 2011|access-date=3 March 2011|first1=Bert|last1=Bos|author-link1=Bert Bos|archive-url=https://web.archive.org/web/20110303230112/https://www.w3.org/Style/CSS/current-work|archive-date=3 March 2011|url-status=live}}</ref>

Some modules have ''[[W3C Recommendation#Candidate recommendation (CR)|Candidate Recommendation]]'' (''CR'') status and are considered moderately stable. At ''CR'' stage, implementations are advised to drop vendor prefixes.<ref>{{cite web|url=https://www.w3.org/TR/css-2010/#css|title=Cascading Style Sheets (CSS) Snapshot 2010|publisher=[[World Wide Web Consortium]]|date=12 December 2010|access-date=3 March 2011|first1=Elika J.|last1=Etemad|author-link1=Elika J. Etemad|archive-url=https://web.archive.org/web/20110316103250/https://www.w3.org/TR/css-2010/#css|archive-date=16 March 2011|url-status=live}}</ref>

{| class="wikitable sortable"
|+ Summary of main module-specifications<ref>{{cite web |url=https://www.w3.org/Style/CSS/specs |title=All CSS specifications |publisher=W3C |date=2014-05-22 |access-date=2014-05-30 |archive-url=https://web.archive.org/web/20140530231250/https://www.w3.org/Style/CSS/specs |archive-date=2014-05-30 |url-status=live }}</ref>
|-
!Module
!Specification title
!Status
!Date
|-
|<samp>css3-background</samp>
|[https://www.w3.org/TR/css3-background/ CSS Backgrounds and Borders Module Level 3]&nbsp;
|''Candidate'' Rec. ||align="right"| {{dts|2023|Feb}}
|-
|<samp>css-box-3</samp>
|[https://www.w3.org/TR/css-box-3/ CSS Box Model Module Level 3]
|''Recommendation'' ||align="right"| {{dts|2023|Apr}}

|-
|<samp>css-cascade-3</samp>
|[https://www.w3.org/TR/css-cascade-3/ CSS Cascading and Inheritance Level 3]&nbsp;
|''Recommendation'' ||align="right"| {{dts|2021|Feb}}
|-
|<samp>css-color-3</samp>
|[https://www.w3.org/TR/css3-color CSS Color Module Level 3]
|''Recommendation'' ||align="right"| {{dts|2022|Jan}}
|-
|<samp>css3-content</samp>
|[https://www.w3.org/TR/css-content-3/ CSS Generated Content Module Level 3]&nbsp;
|Working ''Draft'' ||align="right"| {{dts|2019|Aug}}
|-
|<samp>css-fonts-3</samp>
|[https://www.w3.org/TR/css-fonts-3/ CSS Fonts Module Level 3]
|''Recommendation'' ||align="right"| {{dts|2018|Sep}}
|-
|<samp>css3-gcpm</samp>
|[https://www.w3.org/TR/css-gcpm-3/ CSS Generated Content for Paged Media Module]
|Working ''Draft'' ||align="right"| {{dts|2014|May}}
|-
|<samp>css3-layout</samp>
|[https://www.w3.org/TR/css-template-3/ CSS Template Layout Module]
|''Note'' ||align="right"| {{dts|2015|Mar}}
|-
|<samp>css3-mediaqueries</samp>&nbsp;
|[https://www.w3.org/TR/css3-mediaqueries/ Media Queries]
|''Recommendation'' ||align="right"| {{dts|2012|Jun}}
|-
|<samp>mediaqueries-4</samp>&nbsp;
|[https://www.w3.org/TR/mediaqueries-4/ Media Queries Level 4]
|''Candidate'' Rec. ||align="right"| {{dts|2021|Dec}}
|-
|<samp>css3-multicol</samp>&nbsp;
|[https://www.w3.org/TR/css-multicol-1/ Multi-column Layout Module Level 1]
| ''Candidate'' Rec. ||align="right"| {{dts|2021|Oct}}
|-
|<samp>css3-page</samp>
|[https://www.w3.org/TR/css3-page/ CSS Paged Media Module Level 3]
|Working ''Draft'', and part migrated to css3-break ||align="right"| {{dts|2018|Oct}}
|-
|<samp>css3-break</samp>
|[https://www.w3.org/TR/css-break/ CSS Fragmentation Module Level 3]
|''Candidate'' Rec. ||align="right"| {{dts|2018|Dec}}
|-
|<samp>selectors-3</samp>
|[https://www.w3.org/TR/selectors-3/ Selectors Level 3]
|''Recommendation'' ||align="right"| {{dts|2018|Nov}}
|-
|<samp>selectors-4</samp>
|[https://www.w3.org/TR/selectors-4/ Selectors Level 4]
|Working ''Draft'' ||align="right"| {{dts|2022|Nov}}
|-
|<samp>css3-ui</samp>
|[https://www.w3.org/TR/css-ui-3/ CSS Basic User Interface Module Level 3 (CSS3 UI)]
|''Recommendation'' ||align="right"| {{dts|2018|Jun}}
|}