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CSS Day @cssday.nl · 30/06/2026

The two Google #cssday presentations are on YouTube: youtu.be/QA5f2loqtM4 @una.im about modern UI patterns youtu.be/8FSLsVAJj2w @bram.us about view transitions. The other videos will be published on Conffab in the not too distant future. We'll tell you when they're available.

youtu.be

Modern UI Patterns - Una Kravets - CSS Day 2026

YouTube video by Web Conferences Amsterdam

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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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CSS Day @cssday.nl · 22/06/2026

The #cssday photos are online: cssday.nl/2026/pix/pho...

cssday.nl

CSS Day 2026 photos

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CSS Day @cssday.nl · 18/06/2026

First Doom, now Quake. Next year we could fill a CSS gaming corner somewhere.

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Patrick Brosset @patrickbrosset.com · 18/06/2026

Did you attend #CSSDay and saw my talk (or heard about it), and you really want CSS Grid Lanes to be supported across browsers? ➡️ Give this issue a thumbs-up *and* add a comment explaining your use case. This can help a lot move things forward 💟 github.com/web-platform...

github.com

Masonry · Issue #308 · web-platform-dx/developer-signals

This GitHub issue is for collecting web developer signals for Masonry. The display: grid-lanes or display: inline-grid-lanes CSS declaration creates a layout where items are tightly packed, like br...

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CSS Day @cssday.nl · 14/06/2026

Yes. It'll take a few weeks.

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Jon Pearse @jonpearse.net · 13/06/2026

At Schiphol, headed home from two excellent days at #cssday. I’m tired, my feet ache, and my throat is a little more scratchy than I’d like; but I’m leaving with a full heart and head full of odd ideas for things i want to try out. [1/2]

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Woody @woodyrew.dev · 13/06/2026

What an excellent conference we had at #cssday for the last 2 days. Great talks, great people, great organisation, great food, and great coffee.

Adam Argyle walking on stage in front of his first slide that shows the text "CSS!" in a brush fontface of hot pink.

All of the CSS Day speakers and MCs standing on a stage in front of the Thank you! slide, the event organiser, PPK is speaking into a microphone. The slide says "Thank you! Speakers, Sponsors, Aukes A/V, Kok op Stephen Catering, Eventstack, Bart, Richard, and more YOU, for coming for the 12th time.

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CSS Day @cssday.nl · 13/06/2026

Will Lyra survive her encounter with the grid lanes of an original Dutch automatiek? Stay tuned...

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Manuel Matuzović @matuzo.at · 13/06/2026

I built an offline-first CSS grid lanes demo in my car after learning how to do it from @patrickbrosset.com yesterday at #cssday

8 differently sized boxes stacked in three lanes in the back of my van.

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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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ppk 🇪🇺 @quirksmode.org · 12/06/2026

I find myself in a church. Why? Have I been put here for a reason? Is there a deeper purpose to my presence?

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Artem Pendiurin @erblack.me · 11/06/2026

A #sketchnotes for the talk "What the color?!" by Lea Verou at the @cssday.nl #cssday

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CSS Day @cssday.nl · 10/06/2026

There is nothing to worry about. There will be relatively few flamethrowers at CSS Day and we are very protective of our target audience.

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CSS Day @cssday.nl · 03/06/2026

Especially, give out free tickets to former speakers. Makes sure you always have a bunch of backup speakers.

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CSS Day @cssday.nl · 03/06/2026

And in case you're wondering: no, a speaker change this late is not normal. In fact, we think it's the first time in over 30 organised conferences that this happens.

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CSS Day @cssday.nl · 03/06/2026

Well, we've got a speaker change. @csswizardry.com is unable to make it due to a weird combination of circumstances. Fortunately we found @bram.us willing to take his place. The schedule has been updated to reflect this. cssday.nl/schedule.html

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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CSS Day @cssday.nl · 01/06/2026

And they feel totally relaxed about the whole situation. That's so great.

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CSS Day @cssday.nl · 01/06/2026

And they have a solid grasp on the practicalities of the conference.

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CSS Day @cssday.nl · 01/06/2026

They will never be late in preparing the best talks for our audience.

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CSS Day @cssday.nl · 01/06/2026

We're fortunate to have such experienced, professional speakers.

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Lea Verou, PhD @lea.verou.me · 01/06/2026

🎨😵‍💫 Q: What do you find confusing or difficult about color in modern CSS? Working on my talk for @cssday.nl and if you send me your questions you may find some of them answered in it!

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CSS Day @cssday.nl · 26/05/2026

If you have a special diet, make sure we know about it this week. On Friday night we're going to send the special diet list to the caterer, and it will be locked down. Check your diet on your attendee page. Vegetarian options will be available throughout; it does not count as special. cssday.nl

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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Woody @woodyrew.dev · 13/05/2026

Officially going to @cssday.nl I've followed along remotely for so many years.

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Kevin Powell @kevinpowell.co · 13/05/2026

Working on my talk for @cssday.nl and I just realized it's less than a month away. Not panic time yet, but it's coming fast 😅 Also, early bird pricing ends today, so if you don't have your ticket yet, now's the time! cssday.nl

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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Niels Leenheer @html5test.com · 13/05/2026

Made progress with cssDOOM last evening. Created a special multi-player deathmatch version for CSS Day that runs in kiosk mode. It uses a video wall controller to split up the screen into sections. On the computer it is just one full screen window, but it drives two separate screens.

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CSS Day @cssday.nl · 12/05/2026

No, there won't be a live stream this year. There were too many administrative issues.

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CSS Day @cssday.nl · 06/05/2026

Reminder: On 14th of May CSS Day ticket prices will go up by €75 + VAT. Want to come to cssday.nl ? Ordering now is cheaper than ordering later. See you in June,

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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CSS Day @cssday.nl · 06/05/2026

Reminder: On 14th of May CSS Day ticket prices will go up by €75 + VAT. Want to come to cssday.nl ? Ordering now is cheaper than ordering later. See you in June,

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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CSS Day @cssday.nl · 30/04/2026

Reminder: TODAY is the last day you can buy tickets by invoice. From tomorrow on only Stripe payments are possible. cssday.nl/tickets.html

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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CSS Day @cssday.nl · 23/04/2026

Reminder: In three weeks, #cssday ticket prices go up from €675 to €750. Also, buying tickets on invoice is only possible for another week; after that it's Stripe only. cssday.nl/tickets.html

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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CSS Day @cssday.nl · 14/04/2026

... and we can announce our final three speakers: @meyerweb.com the father of CSS testing and documenting @jakearchibald.com (Mozilla), returning to conferences near you @csswizardry.com, who's going to talk about his recent article about containment See you there! cssday.nl

cssday.nl

CSS Day 2026, 11th & 12th of June, Amsterdam

CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.

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CSS Day @cssday.nl · 19/03/2026

Nope. Boring technology is boring 🥱

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Lea Verou, PhD @lea.verou.me · 19/03/2026

I don’t have time to do as many conference talks these days but @cssday.nl always has a special place in my heart. It’s such a fantastic conference, both for the content and the community. If you can go, don’t miss it!

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Kevin Powell @kevinpowell.co · 17/03/2026

My career highlight was getting to talk at CSS Day a few years ago, so I'm so excited to be heading back this year, alongside so many other great speakers.

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Niels Leenheer @html5test.com · 17/03/2026

So happy to be back on the CSS Day stage this June with so many other fantastic speakers. And I can't wait to show what I've been working on the last year or two. Yes it will be about Doom, Lasers and CSS, and so much more. ✨ I do feel I've hit peak talk title with "CSS Doom Laser".

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CSS Day @cssday.nl · 17/03/2026

Also, we announce new speakers today. @kevinpowell.co Lea Verou, @matuzo.at and @html5test.com will join us on 11th and 12th of June. No flamethrowers will be used. Probably. cssday.nl