The   CSS Working Group   has published a Group Note of   CSS Snapshot 2021 . This document collects together into one definition all the specs that together form the current state of Cascading Style Sheets (CSS) as of 2021. The primary audience is CSS implementers, not CSS authors, as this definition includes modules by specification stability, not Web browser adoption rate. CSS  is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, etc

  The   CSS Working Group   has published the following three First Public Working Drafts: CSS Containment Module Level 3 : This CSS module describes the  ‘contain’  property, which indicates that the element’s subtree is independent of the rest of the page. This enables heavy optimizations by user agents when used well. CSS Conditional Rules Module Level 5 : This module contains the features of CSS for conditional processing of parts of style sheets, based on capabilities of the processor or the environment the style sheet is being applied in. It includes and extends the functionality of CSS Conditional 4 [ css-conditional-4 ], adding the generalized conditional rule  ‘@when’  and the chained conditional rule  ‘@else’ , as well as introducing font processing queries to the  supports query  syntax used in  ‘@supports’  rules. CSS Cascading and Inheritance Level 6 : This CSS module describes how to collate style rules and assign...

  The   Web Performance Working Group   invites implementations of two Candidate Recommendation Snapshots: User Timing  defines an interface to help web developers measure the performance of their applications by giving them access to high precision timestamps. Performance Timeline  extends the High Resolution Time specification [ HR-TIME-3 ] by providing methods to store and retrieve high resolution performance metric data. Introduction: Mastering Digital Growth in 2025—From SEO to Social Media and AI In 2025, digital success isn’t just about having an online presence—it’s about strategically connecting the dots between SEO, web design, content creation, and social media. For small businesses and marketers alike, staying ahead means embracing the latest tools and trends that shape how we rank, engage, and grow online. Whether you're aiming to  win local search  with cutting-edge  SEO for Small Business in 2025: How to Win Local Search and Drive G...

  The  MiniApps Working Group  has published a First Public Working Draft of  MiniApp Packaging . This specification defines semantics and conformance requirements for a  MiniApp package , and the structure of the single file container that holds the resources of a MiniApp, including a manifest file, static page templates, stylesheets, JavaScript documents, media files and other resources. Instances of the  MiniApp package  are used for MiniApp distribution and execution on runtime environments ( MiniApp user agent ).

  he   Accessible Rich Internet Applications Working Group   has published a First Public Working Draft of   Digital Publishing Accessibility API Mappings 1.1 . The Digital Publishing Accessibility API Mappings (DPub-AAM) defines how   user agents   map the Digital Publishing WAI-ARIA Module [ dpub-aria-1.1 ] markup to platform   accessibility  APIs . It is intended for user agent developers responsible for accessibility in their user agent so that they can support the accessibility content produced for digital publishing. The implementation of this specification in user agents enables authors to produce more accessible e-books, by conveying structural book constructs used by the digital publishing industry to assistive technologies. It does this by extending the  Core Accessibility API Mappings 1.1  and the  Accessible Name and Description: Computation and API Mappings 1.1  specifications for user agents. It provides Accessibi...

  The W3C Advisory Committee, having  nominated  four individuals, is invited today to vote until 14 December 2021 for  three seats  in the  W3C Technical Architecture Group (TAG)  election. The TAG is a special working group within the W3C, chartered under the  W3C Process Document , with stewardship of the Web architecture. Some aspects of its mission include to document and build consensus around principles of Web architecture and to interpret and clarify these principles when necessary; to resolve issues involving general Web architecture brought to the TAG; to help coordinate cross-technology architecture developments inside and outside W3C.

  We are excited to announce an open position (possibly part-time) :  Automotive & Transportation Champion , based in the USA or China, or Japan. This is an opportunity for a global leader to drive the overall strategy of applying open web standards to the automotive & transportation ecosystem. The Champion is a thought leader who has a deep understanding of the needs of the automotive industry and a working understanding of web technology. The Champion engages with other automotive thought leaders from W3C Members and with technologists in W3C. By bringing these groups together, the Champion identifies new technology needs for the industry and identifies technical and business approaches to satisfy those needs.