... 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.

He's at 3999 ...

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...

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.

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

Slides published. View with the resources: noti.st/anarodrigues... View with the notes: noti.st/anarodrigues...

🖼️ My #CSSDay slides and all the links are up on talks.hiddedevries.nl/3do3c4/displ... humbled by all the friendly responses to this, it felt like there was real appetite for people to make their sites greener. I love to see it!

Tim presented this work today at #cssday!! Follow him at @ntim.bsky.social

#cssday folks - here are my slides; thank you for listening and not hurling me into the canal. speakerdeck.com/brucel/cssda...

CSS Day 2026, next year: 11th and 12th of June, 2026, Amsterdam Watch the 2025 videos via cssday.nl/live-stream....

Another brilliant @cssday.nl #CSSDay! Thank you so much @ppkoch.bsky.social and all the organisers for doing a perfect job in this labour of love for the Web.

A #sketchnotes for the talk "The goose and the common" by @brucel.bsky.social‬ at the @cssday.nl #cssday

Finally we have the interesting UK national treasure @brucel.bsky.social who is a HTMLaholic. He's also got a certificate as a rat tickler. He's never needed to use it. #CSSDay

A #sketchnotes for the talk "display: green; applying the web sustainability guidelines" by @hidde.blog‬ at the @cssday.nl #cssday

During the afternoon break, teams attending the conference together get to use our stage to take a group photo. 📸 Some of them even show up in custom matching t-shirts, like the team of Total Onion pictured here. 👕👕👕 Kudos!

If you insert swear words in a Google search, it'll turn off the AI answers. 😂 #CSSDay

I love how @hidde.blog includes topics of other speakers into his presentation—this is really great and shows the vibe of @cssday.nl ❤️‍🔥

Thank you to @bitsandletters.com, who sponsor this year's #CSSDay not for themselves, but to make additional student tickets available to the event! Here are all student attendees on our conf stage. (Plus some special guests / photo bombers, can you spot them?) /ht @demar.ee

But a lot of this is a people problem. We need to have that conversation in our teams about making this a collective goal. You could have a sustainability representative. #CSSDay

What creates our footprint? The actual servers and networking hardware, but also the manufacturing of the devices. #CSSDay

He tries to be green but he also does things that are not green. It's difficult not to be hypocritical unfortunately, like a lot of us got a plane to get here. He joined the W3C Web Sustainability Interest Group. He found that ICT imitations are greater than aviation. #CSSDay

Ana Rodrigues on how to best refactor css and how to talk to your project managers about it. // @ohhelloana.blog #cssday #sketchnotes

On #CSSDay, @ohhelloana.blog highlights a major issue in our industry. Product owners' lack of support for continuous maintenance. The metaphor of a house is quite fitting. You wouldn't describe a facilities manager who waits until rot has crawled up the walls as proficient.

A #sketchnotes for the talk "Refactoring CSS" by @ohhelloana.blog at the @cssday.nl #cssday

It's about progress, not perfection. Writing tidy CSS is a skill we have to build up every day. #CSSDay

Ever seen a 'sorry' in a code comment? We've all been there? Time constraints and being human mean we can't always get things right. 'Why would someone do it this way??' Like when Ana found that the old fuse box in the house is hiding under a step in the staircase?? #CSSDay

#CSSDay vs #RolandGarros

@syntax.fm you should challenge @amitsheen.bsky.social for a CSS Battle! But check out his codepen before to make sure you are up for it. He just blew us away here on #cssday codepen.io/amit_sheen/

@amitsheen.bsky.social blowing my mind YET AGAIN 😱🤯 Showing us some more demos off the cuff during Q&A— WOW. #CSSDay

A #sketchnotes for the talk "Building a Computer with CSS" by @amitsheen.bsky.social‬ at the @cssday.nl #cssday

Amit is now live coding our system. And he's setting a custom property to --on: 1. If a NOT gate has an input that is checked, we set --on: 1. #CSSDay

🤯 @amitsheen.bsky.social is going to build a CPU in CSS now. Yeah… I mean… why not, right!? #cssday

I absolutely love it when people live code in a talk and the audience helps to correct typos. The ultimate mob programming. #CSSDay

First we need to understand what a CPU does. There are logic gates that receive two binary numbers and there is a different output. [Feels like I'm going back to school for A-level computer science] #CSSDay

I SAID WE'RE IN FOR A TREAT!!! Damn, @amitsheen.bsky.social casually building a CPU with CSS at #CSSDAY

These must be the real stars of @cssday.nl #cssday

A #sketchnotes for the talk "Form control styling" by @ntim.bsky.social at the @cssday.nl #cssday

Here's a nice little feature as well. A property that makes textarea boxes expand with the lines of text typed. Should it be the default in base mode? Share on the CSSWG. #CSSDay

+10000 for better form controls Default styles are an important part of user experience. #CSSDay

When the base styles are enabled, the styles are the same in every browser. But you can still recognise the controls without additional styles. They still pass WCAG AA rules. And yet, they are timeless and as simple as possible -- not Win95 style. #CSSDay

And don't forget to take the State of CSS 2025 survey when you're not watching #cssday talks. survey.devographics.com/en-US/survey...

Tim is an editor of the Form Styling spec. A key new feature from that is appearance: base where the control gets very very basic intuitive styles. And it can be styled very intuitively. Even the font inherits. #CSSDay

Wow on Nike's website, they don't use the checkbox input element. They remake it with a button and divs. It's a good demonstration of just how hard it can be to get a form control to look the way you want. #CSSDay

Next is @ntim.bsky.social who started off contributing to Firefox and is now on the WebKit team. He's going to talk about styling form controls. #CSSDay

A #sketchnotes for the talk "Smart layouts" by @ishadeed.com‬ at the @cssday.nl #cssday

Shoutout to CSS anchor positioning in @ishadeed.com's talk on smart layout! #CSSDay Such a multi-purpose UI feature 🙂 (Here, he's using anchor positioning to position a description on an image)

His card component has so many layouts. If there's only one card, it does something. If it's featured, it does something. You could use a style query with :has to apply the variable for the style. Nice!!! #CSSDay

Can I just say that watching @ishadeed.com speak, I kinda want to do a session just watching over his shoulder seeing him tinker on some designs. 😁 #CSSDay

So true 🫠 #CSSDay