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Josh Tumath

@joshtumath.uk
1.4K followers 180 following 1.2K posts

Dev in the BBC Design System team. CSSWG member. Here for CSS nerdery, design systems and Intrinsic Web Design. Also Christian and 日本語学習者. he/him

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Reposted by Josh Tumath
zeldman @zeldman.bsky.social · 18/09/2026
“Let me make it clear: without people at the top of their game sharing their experience and knowledge—regardless of whatever ‘game changing’ technology is in place—we are pulling up the ladders and committing our industry to stagnation and death.” bell.bz/youll-miss-p...
bell.bz
You’ll miss publishers when they’re gone
Ever since Piccalilli started to get traction, I’ve always seen CSS-Tricks, Smashing Magazine and A List Apart (among others) as peers. We all help each other behind the scenes and importantly, back…
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Josh Tumath @joshtumath.uk · 18/09/2026
If you work on websites for ordinary web browsers, you are truly blessed. Working at the BBC, I am always shocked by how bad the built-in web browsers are on smart TVs. They fork browsers and rip out lots of web platform features. Apparently one made Math.random() return the same number! 😂
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Josh Tumath @joshtumath.uk · 09/09/2026
I'll be speaking at Web Dev Conf next month, talking about the work we've been doing at the CSS Working Group to make your website more accessible for users who want larger text! Come along! It's a lovely conference with lovely people in a lovely city - and it's not expensive!!
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Josh Tumath @joshtumath.uk · 04/09/2026
The plot thickens.
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Reposted by Josh Tumath
WDC @webdevconf.com · 01/09/2026
We've made it to September which means WDC2026 is just over a month away! Tickets are just £99! With awesome speakers: @joshtumath.uk @amyhupe.bsky.social @paavandesign.com @cjforms.bsky.social @duncanpetrie.com @hidde.blog In the great city of Bristol! webdevconf.com
webdevconf.com
WDC2026 - October 9 2026, Watershed, Bristol, UK | Web Developers Conference
WDC is the web design and development conference based in Bristol, taking place in autumn each year.
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Reposted by Josh Tumath
Lea Verou, PhD @lea.verou.me · 30/08/2026
Call me naïve, but I think the Web should be making it *easier* to create accessible UIs than inaccessible ones. Instead, once you go beyond the basic primitives, the platform is a minefield: the obvious thing to do is rarely accessible, and devs must jump through hoops to make it so.
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Josh Tumath @joshtumath.uk · 17/08/2026
So @nerdy.dev and @matuzo.at have got me addicted to Angine de Poitrine. I am officially a fan. open.spotify.com/track/19MAOZ...
open.spotify.com
Utzp
Angine de Poitrine · Vol.II · Song · 2026
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Josh Tumath @joshtumath.uk · 12/08/2026
Does anyone ever feel limited by the visible light spectrum? All we can use in our designs is various shades of red, orange, yellow, green, cyan, blue, purple, magenta and grey. We could really do with another one for our design system.
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Josh Tumath @joshtumath.uk · 07/08/2026
OK, I'm persuaded. For a toggle in the header or footer, a toggle between 'system colour scheme' ↔️ 'the opposite' is better than system ↔️ light ↔️ dark. Lea is a master of user experience.
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Josh Tumath @joshtumath.uk · 27/07/2026
Come along! This is a fantastic conference!
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Josh Tumath @joshtumath.uk · 25/07/2026
I've just been in my first mosh pit. It was for the Oxford symphony orchestra. 😂
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Josh Tumath @joshtumath.uk · 24/07/2026
I'm at my first music festival. Are you proud of me, @letorey.co.uk ?
Truck Festival main stage pictured, with someone holding an inflatable goose up on a stick
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Josh Tumath @joshtumath.uk · 09/07/2026
Count Binface takes down Newsnight. 😂 (And raises good points about the need for more funding for investigative journalism. @backthebbc.bsky.social )
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Josh Tumath @joshtumath.uk · 02/07/2026
Last month, I was speaking at @cssday.nl on the new <meta name=text-scale> tag. I've just published a blog post with my slides and summary. www.joshtumath.uk/posts/2026-0...
joshtumath.uk
Talk: Let's fix the web's text size - Josh Tumath
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Josh Tumath @joshtumath.uk · 01/07/2026
I'm so grateful to Bramus for making this. It's awesome. Wouldn't you love to make these kinds of gradients natively in CSS - with the browser's graphics engine giving you a native hardware-accelerated render?
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Reposted by Josh Tumath
CSS Day @cssday.nl · 22/06/2026
And the #cssday aftermovie is also online. www.youtube.com/watch?v=IarC... The full videos will follow on Conffab, but it'll take a little while longer.
youtube.com
CSS Day 2026 was a blast!
YouTube video by Web Conferences Amsterdam
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Bramus @bram.us · 22/06/2026
Reminder: The State of CSS Survey is closing *SOON*, so **NOW** is the moment to complete it. stateofcss.com/en-US/ This survey directly influences efforts like Interop and feature planning, so this is **YOUR** moment to let browser vendors know what you find missing on the web!
Promotional Image for the State of CSS Survey 2026
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Josh Tumath @joshtumath.uk · 19/06/2026
It's about time I listed all of the talks that I've done on my website. So here they are. There are more which I can't remember, but these are the ones I remember. Let this be a lesson to you all. Make note of the things that you've done. Because I don't. 😅 www.joshtumath.uk/talks/
joshtumath.uk
Talks - Josh Tumath
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Josh Tumath @joshtumath.uk · 16/06/2026
Hahaha so interesting. It's like the web platform equivalent of when the newspaper was invented and people grumbled about people reading their newspapers on trains (like we do today with our phones).
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Josh Tumath @joshtumath.uk · 16/06/2026
The #CSSDay community had incredibly helpful feedback about <meta name=text-scale>. Lots of different ideas for how to stop headings from scaling at the same rate as body text. Good feedback on how the large text on mobile will be a problem for languages with very long words, like German.
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Reposted by Josh Tumath
Adam Argyle @nerdy.dev · 15/06/2026
I am wildly excited for what the next-gen does with #CSS
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Josh Tumath @joshtumath.uk · 14/06/2026
This might be my last year living in the UK. Next spring, I'm hoping to move to Japan and I plan to start looking for jobs soon. I would love to have a job that would let me continue or increase my participation in the CSSWG. If anyone knows an org in Japan that could hire me, please let me know
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Josh Tumath @joshtumath.uk · 14/06/2026
I'm still thinking about #CSSDay. Seeing old friends and members of the CSSWG who I don't normally get to meet in person. But more importantly, talking to all the attendees. We're so privileged to be part of a world wide community that want to make the web a better place for everyone.
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Ana Rodrigues @ohhelloana.blog · 13/06/2026
We didn’t talk enough about how @sjoy.lol just casually, and magnificently, gave two talks in 24 hours. #CSSDay With a quick shout-out to @localghost.dev ✨
Sara by her slides at Web You Want showing a screenshot of Sophie Koonin’s website. Sara in front of their introduction slide on the stage of CSS Day.
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Lea Verou, PhD @lea.verou.me · 12/06/2026
As @una.im just mentioned in her #cssday talk, the CSS WG recently resolved to insert a ⓘ after EVERY SINGLE INTEREST INVOKER on touchscreens. Here’s a mock of what this would look like for bsky. This is the issue to let the CSS WG know what you think: github.com/w3c/csswg-dr...
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Lea Verou, PhD @lea.verou.me · 13/06/2026
The people of #cssday have spoken: we want gamut mapping and we want it NOW!
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Bruce Lawson @brucel.bsky.social · 12/06/2026
As promised at #cssday: me, in hotpants, shaking the golden-clad BrucieBooty™ to a song based on Village People's "In the Navy": In Vivaldi. www.youtube.com/watch?v=1r9e...
youtube.com
In Vivaldi!
YouTube video by Bruce Lawson
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Reposted by Josh Tumath
Adam Argyle @nerdy.dev · 13/06/2026
My talk for #CSSday went great! I may have gotten pretty heated and upset on stage a few times 😅 Link to the slides and the library I announced "prop-for-that" on my site 🤘🏻 nerdy.dev/contextualis...
nerdy.dev
Contextualism Talk At CSS Day 2026
✅ talk "Contextualism" at CSS Day 2026 Slides · Prop For That
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Josh Tumath @joshtumath.uk · 13/06/2026
At @css.cafe we have @utilitybend.com is talking about the work he and others are doing at OpenUI for dual slider controls. There are so many out there on the web.
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Josh Tumath @joshtumath.uk · 13/06/2026
I'm at @css.cafe and Marco Christian Krenn is talking about design systems and auto generating with code their colour system. They have a similar colour layering system to us at the BBC but I love how it's so automated.
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Ana Rodrigues @ohhelloana.blog · 13/06/2026
And that’s how the t-shirt ended up. Thanks for entertaining it everyone 😁💙 📸 @joshtumath.uk
Me pointing to my t-shirt that has now collected loads of other stickers: OWA, BTConf, AG Grid, 9 elements, Utility bend, edge.
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Josh Tumath @joshtumath.uk · 13/06/2026
Ah, the Firefox for Android colour picker.
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Reposted by Josh Tumath
Patrick Brosset @patrickbrosset.com · 12/06/2026
#cssday continued… Great chats with @schepp.dev and @erwinhofman.bsky.social, advanced CSS talks with @kizu.dev, learned a lot from @joshtumath.uk, got my brain melted by @html5test.com, and of course special thanks to @rgadellaa.bsky.social for fighting the good battle with @open-web-advocacy.org.
Schepp, Erwin, and IJosh, Roma, and iNiels and IRoderick and I
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Josh Tumath @joshtumath.uk · 12/06/2026
And finally PPK invites the speakers on stage. What another fantastic conference. Every talk on point. Incredible work by the audio team, caterers, volunteers and the audience!! Wonderful. And a shout out to @londonwebstandards.org State of the Browser.
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Josh Tumath @joshtumath.uk · 12/06/2026
Nooo it's the end. @ohhelloana.blog rounds us off. The LLMs are only learning from this amazing community. Go and build great things.
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Josh Tumath @joshtumath.uk · 12/06/2026
Finally we've got @nerdy.dev. He's given his thanks to everyone who organised the conference and now he's given us his provocative talk title: 'Our design systems suck'
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Josh Tumath @joshtumath.uk · 12/06/2026
Oh no we're nearing the end of the conference. Second to last we have @una.im! Talking firstly about the elephant in the room: AI. Una has more of a UX design bg but was so amazed by people showing cool stuff on the web that she got involved and now has such an integral dev rel role. @cssday.nl
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Una Kravets @una.im · 12/06/2026
Guess who’s closing out #cssday?! This duo 😎😎 @nerdy.dev
Adam and Una on stage at chrome dev summit 2019
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Josh Tumath @joshtumath.uk · 12/06/2026
Next we have national treasure @meyerweb.com talking about forging our own paths in CSS. To make your own solar system, you can use offset-path. We're going to talk about it today because 69% of people have never heard of it. @cssday.nl
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Josh Tumath @joshtumath.uk · 12/06/2026
Next we have @html5test.com with a talk called CSS DOOM LASERS! So we've got some scientific equipment on stage and he's just brought out a fire extinguisher. Uh oh. @cssday.nl
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Sacha Greif @sachagreif.com · 12/06/2026
Awesome to get a shoutout for the State of CSS survey at #CSSDay!
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Josh Tumath @joshtumath.uk · 12/06/2026
Haha @ohhelloana.blog forgot to introduce herself at the start of the day, apparently, so @sjoy.lol has introduced her. I'm glad we've rectified that. 😁 @cssday.nl
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ppk 🇪🇺 @quirksmode.org · 12/06/2026
So my current theory is that from time immemorial CSS devs got used to content-based layouts such as tables, floats, and flexbox. Then grid came, and it's not based on the content of the items. That's why it's considered confusing or "I already use flexbox so I don't need grid." [1/2]
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Paul van Buuren 🍉‬ 🇪🇺🇳🇱 @paulvanbuuren.nl · 12/06/2026
Unpaid plug of @matuzo.at's excellent book: accessibility-cookbook.com Highly recommended! #cssday
accessibility-cookbook.com
Web Accessibility Cookbook
The Web Accessibility Cookbook provides you with dozens of recipes to help you build common components on the web.
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Ana Rodrigues @ohhelloana.blog · 12/06/2026
The beauty blender of CSS #CSSDay
Manuel in front of his slide showing oklab representation.
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Brecht De Ruyte @utilitybend.com · 12/06/2026
I love a good architecture talk. It's always a bit subjective and opinionated (which is exactly why I love it). There were some nice things in here that I might implement myself on a greenfield project in the future. Some really smart things 😊 Thx @matuzo.at ! #CSSday
Manuel in front of a slide that shows the structure of cascade layers in css
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Josh Tumath @joshtumath.uk · 12/06/2026
Yay it's @matuzo.at . 6 years ago, he did the talk 'That's not how I wrote CSS 3 years ago'. Manuel realised that he's been doing certain best practices for over ten years without second guessing them. Progressive enhancement will always be true, but other problems have better solutions now.
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Josh Tumath @joshtumath.uk · 12/06/2026
Next we have @patrickbrosset.com talking about grid lanes, the new name for masonry layouts. He's been here since the early days of the web when we used to love animated GIFs. @cssday.nl
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Josh Tumath @joshtumath.uk · 12/06/2026
First for today we have @kevinpowell.co talking about how CSS is eating JavaScript! But sadly a Windows Update prompt is eating his presentation slides. @cssday.nl
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Josh Tumath @joshtumath.uk · 12/06/2026
Day 2 of @cssday.nl and Bruce has transformed into @ohhelloana.blog as our MC for today! Here we go!
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