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
11th and 12th of June
Amsterdam
Curated by PPK
https://cssday.nl
11th and 12th of June
Amsterdam
Curated by PPK
Pinned
CSS Day
@cssday.nl
· 29d
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
CSS Day is returning! cssday.nl
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
In case you missed it yesterday, here's @amitsheen.bsky.social building a computer with CSS.
www.youtube.com/watch?v=PFqt...
www.youtube.com/watch?v=PFqt...
Building a Computer with CSS - Amit Sheen - CSS Day 2025
YouTube video by Web Conferences Amsterdam
www.youtube.com
February 12, 2026 at 4:05 PM
In case you missed it yesterday, here's @amitsheen.bsky.social building a computer with CSS.
www.youtube.com/watch?v=PFqt...
www.youtube.com/watch?v=PFqt...
... and our next 2025 video is up ...
Oh here's a recording of the first ever public rendition of my talk from last year at @cssday.nl
www.youtube.com/watch?v=Iufu...
I was so but so nervous and I couldn't sleep the night before!
But anyway, I will be back this year but this time cheering and hosting all the amazing speakers!
www.youtube.com/watch?v=Iufu...
I was so but so nervous and I couldn't sleep the night before!
But anyway, I will be back this year but this time cheering and hosting all the amazing speakers!
Refactoring CSS - Ana Rodrigues - CSS Day 2025
YouTube video by Web Conferences Amsterdam
www.youtube.com
February 4, 2026 at 12:46 PM
... and our next 2025 video is up ...
Clearly, CSS conferences are a thing of the past as well.
I made this "ad" for one of Cursor's recent features.
It finally solves the terrible problem of knowing CSS.
It finally solves the terrible problem of knowing CSS.
February 3, 2026 at 2:22 PM
Clearly, CSS conferences are a thing of the past as well.
To get in the #cssday mood, here's @utilitybend.com 's talk from last year:
www.youtube.com/watch?v=SsBC...
www.youtube.com/watch?v=SsBC...
Styling new HTML UI capabilities - Brecht De Ruyte - CSS Day 2025
YouTube video by Web Conferences Amsterdam
www.youtube.com
January 28, 2026 at 1:27 PM
To get in the #cssday mood, here's @utilitybend.com 's talk from last year:
www.youtube.com/watch?v=SsBC...
www.youtube.com/watch?v=SsBC...
So we sent out the mailing yesterday, and where we expected to sell about 30-35 of the early-bird tickets, we sold all of them plus a few regular ones!
So no more early-bird tickets, we're afraid.
So no more early-bird tickets, we're afraid.
CSS Day is returning! cssday.nl
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
January 27, 2026 at 11:14 AM
So we sent out the mailing yesterday, and where we expected to sell about 30-35 of the early-bird tickets, we sold all of them plus a few regular ones!
So no more early-bird tickets, we're afraid.
So no more early-bird tickets, we're afraid.
January 27, 2026 at 10:25 AM
We started publishing the #cssday 2025 talks, one each Wednesday for the next 12 weeks.
Today: Cyd Stumpel
www.youtube.com/watch?v=rPXS...
Today: Cyd Stumpel
www.youtube.com/watch?v=rPXS...
CSS tried to come for my Job - Cyd Stumpel - CSS Day 2025
YouTube video by Web Conferences Amsterdam
www.youtube.com
January 21, 2026 at 2:46 PM
We started publishing the #cssday 2025 talks, one each Wednesday for the next 12 weeks.
Today: Cyd Stumpel
www.youtube.com/watch?v=rPXS...
Today: Cyd Stumpel
www.youtube.com/watch?v=rPXS...
A final short wait is required. We have to fold the tickets properly before selling them.
January 14, 2026 at 1:25 PM
A final short wait is required. We have to fold the tickets properly before selling them.
CSS Day is returning! cssday.nl
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
January 14, 2026 at 10:04 AM
CSS Day is returning! cssday.nl
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
We will open #cssday ticket sales this month. Early-bird tickets will be announced first via our newsletter cssday.nl/subscribe; subscribe for the most affordable prices.
"There, what do you think?"
...
"What do you mean 'all right'? It was a brilliant bit of announcement!"
...
"That's because you're not a consummate professional."
...
"OK. Well, see you next week."
...
"Well, I'll do more announcements next week, right?"
-
"... right?"
...
"What do you mean 'all right'? It was a brilliant bit of announcement!"
...
"That's because you're not a consummate professional."
...
"OK. Well, see you next week."
...
"Well, I'll do more announcements next week, right?"
-
"... right?"
January 8, 2026 at 1:34 PM
"There, what do you think?"
...
"What do you mean 'all right'? It was a brilliant bit of announcement!"
...
"That's because you're not a consummate professional."
...
"OK. Well, see you next week."
...
"Well, I'll do more announcements next week, right?"
-
"... right?"
...
"What do you mean 'all right'? It was a brilliant bit of announcement!"
...
"That's because you're not a consummate professional."
...
"OK. Well, see you next week."
...
"Well, I'll do more announcements next week, right?"
-
"... right?"
CSS Day, 11th and 12th of June, just announced @brucel.bsky.social and @ohhelloana.blog as their 2026 MCs.
cssday.nl
Ticket sales will open later this month. We'll announce the early-bird tickets on our mailing list first. Subscribe to be notified ASAP!
cssday.nl/subscribe
cssday.nl
Ticket sales will open later this month. We'll announce the early-bird tickets on our mailing list first. Subscribe to be notified ASAP!
cssday.nl/subscribe
CSS Day 2026, 11th & 12th of June, Amsterdam
CSS Day is the conference for CSS designers, developers, spec writers, and browser vendors.
cssday.nl
January 8, 2026 at 1:34 PM
CSS Day, 11th and 12th of June, just announced @brucel.bsky.social and @ohhelloana.blog as their 2026 MCs.
cssday.nl
Ticket sales will open later this month. We'll announce the early-bird tickets on our mailing list first. Subscribe to be notified ASAP!
cssday.nl/subscribe
cssday.nl
Ticket sales will open later this month. We'll announce the early-bird tickets on our mailing list first. Subscribe to be notified ASAP!
cssday.nl/subscribe
"Wait, what? They announced the MCs? I thought I was going to be ..."
...
"Right. Well, maybe next year."
...
"Announce them right now? But ... but ... that '://' is always hell on my throat, and I'm not feeling ..."
...
"Them? I though you would pay me. OK, fine, you convinced me. Here it goes:"
...
"Right. Well, maybe next year."
...
"Announce them right now? But ... but ... that '://' is always hell on my throat, and I'm not feeling ..."
...
"Them? I though you would pay me. OK, fine, you convinced me. Here it goes:"
January 8, 2026 at 1:34 PM
"Wait, what? They announced the MCs? I thought I was going to be ..."
...
"Right. Well, maybe next year."
...
"Announce them right now? But ... but ... that '://' is always hell on my throat, and I'm not feeling ..."
...
"Them? I though you would pay me. OK, fine, you convinced me. Here it goes:"
...
"Right. Well, maybe next year."
...
"Announce them right now? But ... but ... that '://' is always hell on my throat, and I'm not feeling ..."
...
"Them? I though you would pay me. OK, fine, you convinced me. Here it goes:"
"Welcome to ... what was the name again?"
...
"But it's two days, right?"
...
"Right. Ahem.
Welcome to CSS Day-for-historical-reasons."
...
"Not?"
...
"Fine, fine. That's why we practice. Behind the scenes they're comically unready anyway. We have plenty of time."
...
"But it's two days, right?"
...
"Right. Ahem.
Welcome to CSS Day-for-historical-reasons."
...
"Not?"
...
"Fine, fine. That's why we practice. Behind the scenes they're comically unready anyway. We have plenty of time."
January 7, 2026 at 3:04 PM
"Welcome to ... what was the name again?"
...
"But it's two days, right?"
...
"Right. Ahem.
Welcome to CSS Day-for-historical-reasons."
...
"Not?"
...
"Fine, fine. That's why we practice. Behind the scenes they're comically unready anyway. We have plenty of time."
...
"But it's two days, right?"
...
"Right. Ahem.
Welcome to CSS Day-for-historical-reasons."
...
"Not?"
...
"Fine, fine. That's why we practice. Behind the scenes they're comically unready anyway. We have plenty of time."
Reposted by CSS Day
// clears float
// taps mic
"sibling-index(). Text. sibling-index()"
// taps mic
"sibling-index(). Text. sibling-index()"
January 6, 2026 at 1:08 PM
// clears float
// taps mic
"sibling-index(). Text. sibling-index()"
// taps mic
"sibling-index(). Text. sibling-index()"
// clears throat
// taps mic
"One two three. Test. One two three"
"Welcome to CSS D ... no, I need more gravitas. Could you turn up the bass just a little bit?"
// taps mic
"One two three. Test. One two three"
"Welcome to CSS D ... no, I need more gravitas. Could you turn up the bass just a little bit?"
January 6, 2026 at 11:27 AM
// clears throat
// taps mic
"One two three. Test. One two three"
"Welcome to CSS D ... no, I need more gravitas. Could you turn up the bass just a little bit?"
// taps mic
"One two three. Test. One two three"
"Welcome to CSS D ... no, I need more gravitas. Could you turn up the bass just a little bit?"
Reposted by CSS Day
... and if I were to ask you "Who would you like to see speak at CSS Day 2026", what would your answer be?
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
September 24, 2025 at 12:29 PM
... and if I were to ask you "Who would you like to see speak at CSS Day 2026", what would your answer be?
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
Sorry, we limit submission scrolls to 3 meters.
September 24, 2025 at 7:54 PM
Sorry, we limit submission scrolls to 3 meters.
They'll eventually appear on YouTube, but I'm not sure when. I have to evaluate the experiment first.
September 24, 2025 at 7:53 PM
They'll eventually appear on YouTube, but I'm not sure when. I have to evaluate the experiment first.
... and if I were to ask you "Who would you like to see speak at CSS Day 2026", what would your answer be?
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
September 24, 2025 at 12:29 PM
... and if I were to ask you "Who would you like to see speak at CSS Day 2026", what would your answer be?
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
Name as many names as you like.
I'd like to hear about people who aren't that well known yet.
He's at 3999 ...
4k follows and I’ll start a podcast.
June 16, 2025 at 1:34 PM
He's at 3999 ...
Reposted by CSS Day
I spoke at my favorite conference about view transitions last week; @cssday.nl. You can find my slides at: css-day.cydstumpel.nl and my demo here: sidstumple.github.io/view-transit...
June 13, 2025 at 7:10 PM
I spoke at my favorite conference about view transitions last week; @cssday.nl. You can find my slides at: css-day.cydstumpel.nl and my demo here: sidstumple.github.io/view-transit...
Reposted by CSS Day
One of the best moments at @cssday.nl was when my daughter, Alma, joined me on stage during the Q&A session with @bram.us. It was one of the cutest moments ever! ❤️
June 14, 2025 at 7:20 AM
One of the best moments at @cssday.nl was when my daughter, Alma, joined me on stage during the Q&A session with @bram.us. It was one of the cutest moments ever! ❤️
The CSS Day 2025 photos are up at cssday.nl/2025/pix/pho...
The interface is still a bit basic, but the photos are there for your downloading pleasure, especially if you had a team photo taken.
The interface is still a bit basic, but the photos are there for your downloading pleasure, especially if you had a team photo taken.
June 13, 2025 at 2:47 PM
The CSS Day 2025 photos are up at cssday.nl/2025/pix/pho...
The interface is still a bit basic, but the photos are there for your downloading pleasure, especially if you had a team photo taken.
The interface is still a bit basic, but the photos are there for your downloading pleasure, especially if you had a team photo taken.
Reposted by CSS Day
Big thanks to CSS Day (@cssday.nl) for the kind invitation, such an honor to speak! ❤️
It was great meeting so many online friends in person and left feeling even more excited about what’s coming in CSS and the web ✨
My talk slides:
www.figma.com/deck/NewdIWN...
#cssday
It was great meeting so many online friends in person and left feeling even more excited about what’s coming in CSS and the web ✨
My talk slides:
www.figma.com/deck/NewdIWN...
#cssday
Figma
Created with Figma
www.figma.com
June 10, 2025 at 4:27 PM
Big thanks to CSS Day (@cssday.nl) for the kind invitation, such an honor to speak! ❤️
It was great meeting so many online friends in person and left feeling even more excited about what’s coming in CSS and the web ✨
My talk slides:
www.figma.com/deck/NewdIWN...
#cssday
It was great meeting so many online friends in person and left feeling even more excited about what’s coming in CSS and the web ✨
My talk slides:
www.figma.com/deck/NewdIWN...
#cssday
Reposted by CSS Day
Slides published.
View with the resources: noti.st/anarodrigues...
View with the notes:
noti.st/anarodrigues...
View with the resources: noti.st/anarodrigues...
View with the notes:
noti.st/anarodrigues...
Refactoring CSS by Ana Rodrigues
In recent years, updates in CSS have given us many exciting possibilities for creating modern, dynamic web experiences. Yet, for many developers, the day-to-day reality often involves working within t...
noti.st
June 8, 2025 at 1:42 PM
Slides published.
View with the resources: noti.st/anarodrigues...
View with the notes:
noti.st/anarodrigues...
View with the resources: noti.st/anarodrigues...
View with the notes:
noti.st/anarodrigues...