Sean van Zuidam

O good one, I tried this and was sad to find it does not work, happy to see calc-size makes this possible.

Making interesting borders with CSS corner-shape You can make cool beveled, rounded, notched, scooped, and elliptical borders with the new CSS corner-shape property!

corner-shape is one of those things where when you first see it, it's like "oh cool, I can make a scoop!" It's something new, which is fun, but it can be hard to think of good use cases.

But, as @cassidoo.co looks at here, it's going to open up a lot of possibilities 🙂 cassidoo.co/post/css-cor...

Good to see RSS support 🙌

Native CSS Utilities With every passing year, CSS becomes more powerful. The last few have brought amazing additions that...

The upcoming `attr()` function might change how we handle utility styles.

Explore how we could move from generated CSS classes to native browser capabilities.

{ author: @grimlink.bsky.social }

dev.to/fylgja/nativ...

Native CSS Utilities A look into how the new and improved CSS attr() function will change the way we write CSS utilities.

Looking forward to the new attr()
fylgja.dev/blog/native-...

#fylgjacss #css #tailwindcss #css-utilities

We’re finalizing the core UI Library! 🚀

After dropping the Badge and Toast components at the end of the year, we’re now busy wrapping up the final set.

If you’re looking for a specific CSS component, it’s likely on our list! 🛠️

#DesignSystems #UIUX #Frontend #CSS

Unwrapping one of @bram.us' favorite UI features that dropped in 2025 🎁 Invoker Commands let buttons control other elements (like opening a dialog) purely with HTML, no onclick handlers necessary.

Explore the full CSS Wrapped list → goo.gle/CSSWrapped25

Oh that's great!

No more need to recreate this using box-shadows or pseudo elements.

My wrap-ups of 2025.

Instead of sharing each one, here are all of them in one bundle 😉

#2025wrapup #PlaystationWrapUp #YouTubeMusicRecap #google-photos

This API is SOOOOOOO good … can't wait for it! 🤩

I'm using it on some demos over at view-transitions.chrome.dev.

Get the details about this API at developer.chrome.com/docs/web-pla...

the first rule of aria is you avoid using aria - referencing fight club

#aria
completing practical-accessibility.today by @sarasoueidan.com
fantastic course on #a11y

Likewise 😉

Performance now speakers of 2025

Cross browser testing is an act of user advocacy

JS being the Elephant in the room

Quote from Barry Pollard "Simple to use, progressive enhancement, built in APIs are the best"

What a fantastic two days at @perfnow.nl! Learned so much, not just from the talks, but from all the great people. Time to digest those notes 😅! It was a blast being the #magento dev in the crowd explaining @hyva.bsky.social to folks who hadn't heard of it yet 😁

#perfnow #hyva #mage-os

Thanks, this gives me an idea on how to add this to Hyvä but I will keep a lookout on the blog article and play around with it first before adding it.

Question for @tunetheweb.com for @perfnow.nl, can you detect if the 'prerender until script' is supported and fallback to prefetch if not yet supported

Custom Cursor Accessibility The one where I fat finger with a mouse

Enjoyed this writeup by @dbushell.com about the usability of custom cursors in #CSS

dbushell.com/2025/10/27/c...

When I visited the Wondermake website I was surprised the cursor was that big. I didn't realize it was responding to my OS settings. Neat. Interesting that Windows doesn't do the same.

Fylgja CSS could use some love, it's a Modular CSS Library (fylgja.dev)

Start using Scroll-driven animations today! | Blog Cyd Stumpel To celebrate scroll-driven animations finally landing in Safari 26, here are some things you probably want to know before using them. Link to: The anatomy of a scroll driven animation We don’t need th...

I wrote an article to celebrate scroll-driven animations finally landing in Safari 26, here are some things you probably want to know before using them:
cydstumpel.nl/start-using-...

I’m Not a Robot, a game about solving CAPTCHAs, is out now!

good luck :)

> neal.fun/not-a-robot/

Just dropped a new blog post! 🚀

We're demystifying Design Tokens and showing you how to manage your design decisions like a pro. Stop the copy-paste madness and create a single source of truth for your UI.

Check it out: fylgja.dev/blog/what-ar...

#DesignTokens #CSS #CSSProps #UI #Fylgja

👀 Browserslist 4.26 - Now supports Baseline Queries

Thanks @en.sitnik.ru @tonypconway.com , this will be way more convenient in many cases!

Very interesting

Make your proposals for Interop 2026  |  Blog  |  web.dev Find out about the progress of Interop 2025, and how to submit your ideas for 2026.

Interop 2026 has started asking for proposals.

web.dev/blog/interop...

What would you like to see being made more interoperable across all the major browsers?

Create Performant Layouts and Resilient Dropdowns This CSS anchor positioning course teaches you how

Anchor positioning is not yet baseline, but you can use it in production with a polyfill - anchor-positioning.oddbird.dev (and in fact, we're using it on oddbird.dev).

If you're curious about anchor positioning, now is a great time to learn, and my email course will help you dive deep!

Remember that accessibility benefits everyone, including your future self. It is the ethical way to approach designing and building digital products that are truest to the inherent inclusive nature of the Web.

Thank you for coming to my short and sweet TED talk. 🥰

Chrome 140 beta  |  Blog  |  Chrome for Developers Discover the features that are coming to Chrome in the latest beta release.

Chrome 140 beta

https://developer.chrome.com/blog/chrome-140-beta?hl=en

Fylgja 2.1 is Live: New Utilities, Performance Boosts, and More This release brings a host of improvements across the Fylgja library, focusing on new features, performance enhancements.

🦊 Fylgja 2.1 is Live: New Utilities, Performance Boosts, and more: fylgja.dev/blog/release...

#CSS #WebDev #OpenSource #Fylgja #CSSProps #ClasslessCSS

No and yes.
Both Nu and W3C both show errors for things that are valid, things that are in these tools not supported or not yet known.

I do test my pages using A11y tools which includes a bit of testing on valid html which I find more useful

This is a great progressive method for any TOC solution.

Thanks for sharing 😊

Looks great