CSS Working Group @csswg
We're Cascading with Style... https://t.co/3QCqdWw9pW w3.org/Style/CSS/ worldwide Joined March 2008-
Tweets2K
-
Followers44K
-
Following56
-
Likes131
Notes Telecon 2025-10-08 w3.org/blog/CSS/2025/… web-animations, css-animations, cssom-view, css-pseudo, css-anchor-position
(And lots of other small fixes and clarifications, as usual.)
Updated WD of CSS Anchor Positioning L1 Mostly adjustments to how default alignment works, plus renaming the x/y-self-foo keywords to self-x/y-foo w3.org/blog/CSS/2025/…
Notes Telecon 2025-09-24 w3.org/blog/CSS/2025/… css-images, css2, css-sizing, css-align, css-tables, css-anchor-position, css-animations, web-animations
Notes CSS Values 5 Breakout w3.org/blog/CSS/2025/…
Notes Telecon 2025-09-17 w3.org/blog/CSS/2025/… css-env, css-ui, css-pseudo, css-forms, css-backgrounds, css-flexbox
CSS Grid L3 (aka Masonry Layout) updated WD Some algo updates, and a few open questions we'd like feedback on! w3.org/blog/CSS/2025/…
Notes CSS Overflow Breakout 2025-09-17 w3.org/blog/CSS/2025/… css-overflow
Notes Telecon 2025-09-10 w3.org/blog/CSS/2025/… css-color, css-conditional, web-animations, css-animations
Notes Telecon 2025-09-03 w3.org/blog/CSS/2025/… css-text-decor, css-grid/masonry, css-overflow
Notes Breakout CSS Snapshot 2025 w3.org/blog/CSS/2025/…
Notes Telecon 2025-08-13 w3.org/blog/CSS/2025/… cssom-view, css-grid, css-anchor-position, css-animations
Earlier draft announcement, for reference: w3.org/blog/CSS/2025/… CSSWG is looking for author feedback on these open questions, so please help us by exploring the ideas and letting us know what you think!
Some recent discussions on developing masonry layout: - developer.chrome.com/blog/masonry-u… - webkit.org/blog/16587/ite… - webkit.org/blog/17219/ite… See overview of key open issues at github.com/w3c/csswg-draf… Current official draft at w3.org/TR/css-grid-3/, incorporating item-flow (2 options).
Notes Telecon 2025-08-06 w3.org/blog/CSS/2025/… css-color-adjust, css-anchor-position, web-animations, css-multicol, css-env, css-pseudo, css-page-floats, css-inline
Notes Gap Decoration Breakout 2025-08-06 lists.w3.org/Archives/Publi…
Notes Telecon 2025-07-16 w3.org/blog/CSS/2025/… css-cascade, css-forms, css-color, cssui, css-view-transitions, css-animations
Notes Telecon 2025-07-09 w3.org/blog/CSS/2025/… css-color-hdr, css-ui, css-env, css-fonts, css-conditional
Notes Telecon 2025-07-02 w3.org/blog/CSS/2025/… css-borders-4, css-text, css-values, css-backgrounds
Sarah Drasner @sarah_edo
297K Followers 3K Following Opinions my own Area Tech Lead, AI and Web Ecosystem @chrome, Formerly Sr. Director of Core Infra @google • O'Reilly Author • https://t.co/HhzYWwxYAH
Adam Argyle @argyleink
59K Followers 2K Following @Shopify design-engineer; prior @GoogleChrome, @GoogleCloud, CSSWG, and CSS Podcast. Host on @whiskeywebfm, maker of @OpenProps, https://t.co/lb3SDxC6EC and more
Jake Archibald @jaffathecake
107K Followers 2K Following Developer of sorts at @firefox. No thought goes unpublished. He/him. Also jaffathecake on Mastodon, bsky, Threads etc.
Ahmad Shadeed @shadeed9
26K Followers 208 Following Design Engineer. 🎼 CSS Course: https://t.co/1YV2dr5Xp5 📘 https://t.co/u2Mwa0NV16 ✍️ https://t.co/uZCVbHrztF 📪 https://t.co/CRKmRtzka1 📂 https://t.co/VTAAYbMRu8, https://t.co/Jy2gQ97l4L
Addy Osmani @addyosmani
399K Followers 3K Following Director, @GoogleCloud AI. Gemini ✨ Agents. Prev: Eng. leader, @GoogleChrome • Author • Great user, developer & AI experiences • @GoogleAI @GoogleDeepMind
Lea Verou, PhD @LeaVerou
117K Followers 1K Following Product, web standards, usability • @csswg Invited Expert • @w3ctag alum • CS/HCI PhD @MIT Also: 🐘 @[email protected] • 🦋 @lea.verou.me
Evan You @evanyou
311K Followers 2K Following Husband / Father of two / Founder @voidzerodev (acq. @cloudflare) / Creator @vuejs & @vite_js. Chinese-only alt: @yuxiyou
David K 🎹 @DavidKPiano
86K Followers 3K Following Making state machines at @statelyai · I play piano
Bramus @bramus
14K Followers 740 Following Chrome DevRel at Google (CSS + Web UI). @CSSWG Member. Former University Lecturer. PADI Divemaster. Blogs at @bramusblog. You should follow me on Bsky 🦋.
Una 🇺🇦 @Una
88K Followers 1K Following Building the web you build on @GoogleChrome ✨🎨 Web Experience DevRel Lead 🦄 @csswg + @openuicg. #CSSPodcast host 🎬 https://t.co/J9Y8U6Bz4f
Devon Govett @devongovett
42K Followers 1K Following Creator of @parceljs. Engineer @adobe working on React Aria and React Spectrum.
Kevin Powell @KevinJPowell
56K Followers 600 Following CSS Evangelist Helping people fall in love with CSS: YT: https://t.co/Zw5FMPLKQz Twitch: https://t.co/2HEmoiM37N Courses: https://t.co/BJIftdUnMN
Shu @shuding
58K Followers 2K Following @vercel. @v0, @nextjs, @aisdk, Satori, SWR. Don’t talk unless you can improve the silence.
Seb ⚛️ ThisWeekIn... @sebastienlorber
54K Followers 5K Following 🔥 Join 40k devs - Stay up-to-date with React: • 📨 https://t.co/DvLGHeLY5G • @ThisWeekInReact • @docusaurus maintainer • 🇫🇷
Alex Russell @slightlylate
34K Followers 4K Following This place is not a place of honor. No highly esteemed deed is commemorated here. Noting valued is here...This message is a warning about danger.
Bruce Lawson @brucel
29K Followers 2K Following I dislike fascism, so now posting at @[email protected]. My music: https://t.co/buJ4452vba.
CodePen.IO @CodePen
204K Followers 2K Following Build, test, and discover front-end code 💻 Support: https://t.co/VsjoQWHgIr
R 'Nearest' Nabors @rachelnabors
28K Followers 2K Following mimarobe | Prev @reactjs @aws @W3C | agentic web herald Directors call me up in the middle of the night to ask about AI. I want your replies, not your likes
CSS-Tricks @css
503K Followers 2K Following The official account for https://t.co/ZyrX49CzrB, a web design community powered by @DigitalOcean.
Zafii ktk @Zafiiktk
0 Followers 3 Following
Mohamed Ahmed @MoAhmedDev
1K Followers 38 Following Frontend Developer | Vue.js | Nuxt.js | #TypeScript | Tailwind #CSS | Modern Web Applications | #SEO | Growth Specialist & Open-Source Enthusiast
Daniel Hayes Smith @danielhayesmith
11K Followers 4K Following Building AI-powered civic tech for governments & nonprofits. Now: Pinellas County. Prev: Amnesty International, https://t.co/fJBzI3YPC5, PBS, Greenpeace, UNHCR, etc.ねおくん @sodium00
39 Followers 56 Following
Thong @thong_gee
14 Followers 141 Following
Celio @estezaco
14 Followers 619 Following
Guilherme Braga Catã... @guilhermebcatao
53 Followers 188 Following Front-end dev (4 yrs) @ largest bank in South America
Mates Havel @MatesHavel
1 Followers 175 Following repository of news and interesting things from the world of frontend
Arup Ratan Sarker @ArupRatan93
1 Followers 52 Following Expert WordPress & Shopify Developer from Bangladesh with 5+ years of hands-on experience building and growing successful online businesses.
White Witch Moth @whiteWitchMothy
2 Followers 106 Following
olly thx @OllyThx88858
13 Followers 437 Following
Syed Haris Ullah @SyedHarisUllah
2 Followers 19 Following Team Lead Ops | AR & RCM Specialist Practice Audit • Payment Posting • VOB Multi-Specialty Expertise MDGain Practice Management [email protected]
Noman Khan @noman30647
19 Followers 734 Following
Bisma Gohar72 @BiamaGohar22
0 Followers 25 Following
Fida Hussain Shaikh @FidaShaikh62249
0 Followers 59 Following
Unknown user @DeMax384472
0 Followers 33 Following
Anum Ayub @Anum2026
1 Followers 31 Following
Nobody @RobertTyre3
57 Followers 493 Following I'm nobody, and you can't kill a person with no body. -Mr. Confused
김찬민 @chanstar0623
0 Followers 17 Following
Haris @haris_mandal
10 Followers 500 Following
Emaan Jalil Satti @emaan_jalil
1 Followers 83 Following
Emma chaelotte @EChaelotte93285
1 Followers 57 Following
Zoalfekar @ZoalfekarN
2 Followers 281 Following
C Dam @CDam883016
0 Followers 21 Following
jordimolins @jordimolins
35 Followers 144 Following
NAfiridi @Nafridi20087
1 Followers 9 Following
Deviant kid @Nemora_Wyrm
0 Followers 14 Following
modern.css @moderncss
67 Followers 35 Following Curated collection of modern CSS code snippets. Every old CSS hack next to its clean, native replacement, side by side.
kareem khan @kareem_kha24657
1 Followers 138 Following
AKA LEMON @lemon_aka44452
0 Followers 8 Following
flo @floerrm
0 Followers 87 Following
Muhammad Sheraz @Muhamma69691258
231 Followers 1K Following I am really a good person but you don't give me a reason to show my evil aside.
Ahmad Shadeed @shadeed9
26K Followers 208 Following Design Engineer. 🎼 CSS Course: https://t.co/1YV2dr5Xp5 📘 https://t.co/u2Mwa0NV16 ✍️ https://t.co/uZCVbHrztF 📪 https://t.co/CRKmRtzka1 📂 https://t.co/VTAAYbMRu8, https://t.co/Jy2gQ97l4L
Lea Verou, PhD @LeaVerou
117K Followers 1K Following Product, web standards, usability • @csswg Invited Expert • @w3ctag alum • CS/HCI PhD @MIT Also: 🐘 @[email protected] • 🦋 @lea.verou.me
R 'Nearest' Nabors @rachelnabors
28K Followers 2K Following mimarobe | Prev @reactjs @aws @W3C | agentic web herald Directors call me up in the middle of the night to ask about AI. I want your replies, not your likes
🦋@tabatkins.com (b... @tabatkins
4K Followers 575 Following 🦋 @tabatkins.com 💖 I maintain this account solely for kpop purposes. Follow me on bsky if you actually want to talk with me.
Robert Flack @flackrw
432 Followers 101 Following Software Developer at #Google on #Chromium. Opinions are my own.
Amelia Bellamy-Royds @AmeliasBrain
5K Followers 1K Following Opinionated human. Sometimes writer & web standards developer. 🐦🛫 Now mostly at https://t.co/AbN3tLlLg1 (work) & https://t.co/G2FKSsnAui (play) She/her
Melanie Richards @soMelanieSaid
3K Followers 771 Following Staff Product Manager at Webflow. Find me on Mastodon: @[email protected]
Behdad Esfahbod @behdadesfahbod
10K Followers 3K Following Software Engineer consultant specializing on fonts and text. @HarfBuzz. Ex Facebook/Google/RedHat/FarsiWeb. Free Iran 🇮🇷 🌈
Xidorn Quan @upsuper
6K Followers 780 Following
Hiroshi Sakakibara @skk_mimi
284 Followers 305 Following 1980年生。2010年慶應義塾大学政策・メディア研究科博士課程単位取得退学。主にCPSネットワークなどの研究に従事。IPA 未踏事業獲得。学振特別研究員。現BPS取締役。主に電子書籍事業・デジタル教科書事業に従事。EPUB3関連開発推進責任者。現慶應義塾大学環境情報学部非常勤講師。
Brian Birtles 🇯�... @brianskold
1K Followers 998 Following Founder of @birchilljp (Web browsers and @10tenstudy). W3C CSS Working group (Web Animations). Previously @mozilla Firefox.
Cameron McCormack @heycam
2K Followers 653 Following 墨俊凱 · Hacking on WebKit at U+F8FF in some fonts · ex-Mozilla · 🏳️🌈 · 📍🇦🇺📍🇳🇿📍🇹🇼 · @[email protected]
Dean Jackson 🦕 @grorg
463 Followers 348 Following the average of Dr House, Dr Cox, Dr Howser, Dr Riviera, Dr Who, Dr Quinn and Dr Lecter. But not a doctor.
smfr @smfr
2K Followers 750 Following WebKit developer, cyclist, steam engine builder @[email protected]
Dean Jackson @grorgwork
2K Followers 13 Following
Rossen Atanassov @cssrossen
858 Followers 10 Following Microsoft Security Engineer, @csswg co-chair, @w3ctag, dad, drummer, diver and a long-time fan of the Web!
Rachel Andrew @rachelandrew
54K Followers 1K Following Content Lead for Chrome DevRel at Google. CSS Working Group member. Posting work-related stuff here, find me elsewhere for cats, running, and other stuff.
EverOut Seattle @EverOutSeattle
4K Followers 623 Following EverOut is your guide to things to do in Seattle, brought to you by @thestranger. Photo: Jess Stein.
shane stephens @komradshaneski
78 Followers 129 Following
Greg Whitworth @gregwhitworth
4K Followers 1K Following Senior Director of the Application Runtime teams at @salesforce. Chair of @openuicg. Prior PM on Microsoft Edge
Koji Ishii @kojiishi
738 Followers 437 Following Chrome, Blink, Sailing, Bike, W3C, CSS, EPUB, Typography, Graphics, Fonts, Programming, Computer Science
Dirk Schulze @dirkschulze
1K Followers 484 Following Working on @Illustrator for @Adobe. SVG WG chair. W3C specs editor. Former WebKit/Blink/Gecko developer.
Vincent Hardy @vincent_hardy
740 Followers 179 Following Interactive graphics and animation Web-head, using open web standards.
John Daggett @nattokirai
292 Followers 2K Following
Alan Stearns @alanstearns
573 Followers 155 Following CSS Panjandrum at Adobe. “Kind and yet ruthless” co-chair of the CSSWG. He/They.
CSS3 Color @css3color
213 Followers 4 Following CSS Color Module Level 3. 'color' & 'opacity' properties, RGB(a), HSL(a), 'transparent', 'currentColor', named and system color values.
CSS3 UI @css3ui
263 Followers 3 Following CSS Basic User Interface Module Level 3. 'box-sizing', 'outline-*', 'resize', 'text-overflow', 'cursor', 'nav-*', 'caret-color' propertiesFlorian @frivoal
790 Followers 22 Following Invited Expert to the CSS Working Group, member of the W3C Advisory Board, and other miscellaneous web standards stuff. He/him.
Sam Sneddon 🏳️�... @gsnedders
2K Followers 1K Following see https://t.co/iuLXQf6TMz for literally everything
CSS Commits @CSScommits
694 Followers 2 Following Latest commits to @CSSWG’s public Mercurial repository. Keywords: feed edits updates drafts
TheShelbyMooreBot @ShelbyMooreBot
7 Followers 0 Following Author of the famous and ubiquitous Axiomatic Proof
Todd Fahrner @toddfahrner
257 Followers 235 Following We grow through utter defeat by ever greater beings.
Jeffrey Veen @veen
34K Followers 771 Following Design Partner at @TrueVentures. Formerly, founder of Typekit and Adaptive Path, design leadership at Google and Adobe.
Chris Lilley @svgeesu... @svgeesus
5K Followers 3 Following “Father of SVG”. @W3C staff. Co-developed PNG, @font-face, WOFF. These days working on Web Fonts, Web Audio, CSS. He/him.
村上真雄 MURAKAMI... @MurakamiShinyu
2K Followers 710 Following @Vivliostyle Project Leader, Developer. #Vivliostyle #CSS組版 について何でも聞いてね❗️ 妻(由美 @yumimrkm)と楽しい二人暮らし。愛車いすゞ117クーペ
Peter Linss (Parroty) @plinss
2K Followers 197 Following
alexmog @alexmog
80 Followers 41 Following
Ian Hickson @Hixie
7K Followers 104 Following
Chris Wilson (@cdub@m... @cwilso
6K Followers 1K Following World Wide Web Shaman. Techno-pessimist. Web Standards Tech Lead at Google. Freethinker. He/him.





















