CSS Day
@cssday.nl
The annual CSS conference that brings specifiers, implementors, teachers, and authors together to discuss the current state of CSS, upcoming features, and cool demos. https://cssday.nl 3rd and 4th of June 2027 Amsterdam Curated by PPK
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.
Modern UI Patterns - Una Kravets - CSS Day 2026
YouTube video by Web Conferences Amsterdam
youtu.be
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.
CSS Day 2026 was a blast!
YouTube video by Web Conferences Amsterdam
youtube.com
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...
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...
github.com
The slides for my talk "Breaking with habits" at @cssday.nl 2026 are online! noti.st/matuzo/XfWwB... Transcript: noti.st/matuzo/XfWwB...
Breaking with Habits by Manuel Matuzovic
Some new features in CSS only show their real potential when we radically break with old habits. Doing that on an existing website is almost impossible. That’s why Manuel built a new project from scra...
noti.st
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]
What an excellent conference we had at #cssday for the last 2 days. Great talks, great people, great organisation, great food, and great coffee.
Will Lyra survive her encounter with the grid lanes of an original Dutch automatiek? Stay tuned...
Rebane@rebane2001.bsky.social · 3mo ago#cssday was amazing!! so many awesome talks and people! hopefully again next year?
I built an offline-first CSS grid lanes demo in my car after learning how to do it from @patrickbrosset.com yesterday at #cssday
I find myself in a church. Why? Have I been put here for a reason? Is there a deeper purpose to my presence?
There is nothing to worry about. There will be relatively few flamethrowers at CSS Day and we are very protective of our target audience.
Kilian Valkhof@kilianvalkhof.com · 3mo agoThe amount of times that both @html5test.com and @cssday.nl have assured us there will absolutely definitely be no flamethrowers at CSS day makes me worried about the number of flamethrowers there will be at CSS Day.
@cssday.nl speakers. As always, an amazing lineup. Looking forward to the talks. Sketchnotes at the ready. @bram.us @html5test.com @jakearchibald.com @joshtumath.uk @kevinpowell.co @lea.verou.me @matuzo.at @meyerweb.com @nerdy.dev @patrickbrosset.com @rebane2001.bsky.social @sjoy.lol @una.im
We still have a few tickets left. Maybe come off your fence and join us next week? cssday.nl/tickets.html
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
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
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
And they feel totally relaxed about the whole situation. That's so great.
Una Kravets@una.im · 3mo agoPanic mode started last week for me :) Especially given the timing with the big Google event I had to be 100% focused on right before. AHHH!
And they have a solid grasp on the practicalities of the conference.
Kevin Powell@kevinpowell.co · 3mo agoYup, this weekend it quickly escalated from back-of-the-mind worry to full-on panic 😅
They will never be late in preparing the best talks for our audience.
Manuel Matuzović @matuzo.at · 3mo agoMy panicking set in today when I realized that I will be leaving for the Netherlands in exactly one week.
We're fortunate to have such experienced, professional speakers.
Lea Verou, PhD@lea.verou.me · 3mo agoWow you two are early — my panicking is scheduled to start tomorrow. 😅 There:
🎨😵💫 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!
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
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
The schedule for @cssday.nl is online! It's going to be fun! Who will I meet in Amsterdam? cssday.nl/schedule.html
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
Officially going to @cssday.nl I've followed along remotely for so many years.
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
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
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.
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,
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
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,
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
Oh look, the #cssday speakers are starting to cooperate to bring DOOM to our audience. front-end.social/@bramus/1165...
Bramus (@bramus@front-end.social)
Attached: 1 image The one where Ladybird added basic CSS Anchor Positioning support just so it can more accurately run @html5test ’s cssDOOM: https://github.com/LadybirdBrowser/ladybird/pull/8686 ...
front-end.social
