^ Cons: Firefox doesn't support style queries yet so browser support is limited for now (though it is an #Interop2026 feature!).

was looking through css wins from #interop2026 & noticed this too; so good to see.
bsky.app/profile/una....
bsky.app/profile/jaun...

Apple's WebKit team unveils ambitious goals for #Interop2026, aiming to enhance browser compatibility and streamline web development. #WebKit #BrowserInterop #WebDevelopment Link: thedailytechfeed.com/apples-webki...

webdev #Interop2026 things that would be useful in my current project:

html (all)
lazy <video> attribute

css (firefox)
text-box-trim

js (safari/firefox)
navigator.connection.effectiveType

new css (all)
background-opacity

@jensimmons.bsky.social @jakearchibald.com @una.im @shoptalkshow.com

Microsoft Edge and Interop 2026 Windows Blogs: Microsoft Edge is commited to a more powerful, predictable, and reliable web platform. One way we pursue those goals is via our ongoing participation in the Interop project. This year ...

#MicrosoftEdge and #Interop2026 #Edge
www.elevenforum.com/t/microsoft-...

No CLS in Interop26. Well, we were lucky in 25, maybe next year?

web-platform-tests dashboard

#Interop2026 is here!

Lots of new CSS coming your way:

- style queries
- anchor positioning improvements (already crossbrowser)
- advanced attr()
- popover & dialog improvements like lightdismiss
- scroll-driven animations
- better scroll-snap capabilities

wpt.fyi/interop-2026

Original post on mastodon.social

@cwilcox808 😢

I forgot to submit for #interop2026, but...

github.com/web-platform-tests/inter...

github.com/web-platform-tests/inter...

wpt.fyi/results/css/css-shadow

Everything's sitting there […]

@westbrook
#Interop2026

Viewports · Issue #1084 · web-platform-tests/interop Description This is a reprise of this request made for Interop2024 and this request made for Interop2025. Despite the Viewport Investigation Effort from Interop2022 and the Mobile Testing investiga...

Bon, I filed github.com/web-platform... for #interop2026

Screenshot of Safari 26 in "tabs at the top" mode showing a webpage that is set to `viewport-fit=cover` and the dynamic toolbars scrolled away (minimized). The viewport is too short and the safe area insets are all wrong. Device: iPhone 13 Pro.

Screenshot of Safari 26 in "tabs at the top" mode showing a webpage with the dynamic toolbars scrolled away (minimized). The viewport (blue box) is way too short and does not toch the very top of the screen. Device: iPhone 13 Pro.

Viewport behavior in Safari 26 is utterly broken. 🙄😭

Time to get Viewports into #Interop2026 because viewports on iOS have gotten only worse since I did the initial research in, *checks notes*, 2022 — github.com/web-platform...

Yes, thanks for pointing in the right direction 😊
Since the draft spec does not include this yet, I guess it's too early to propose this for #Interop2026, right?

Neue Technologie-Vorschau zu Safari; «Interop 2026» steht an Viel Neues für WebKit und Safari

Neue Technologie-Vorschau zu #Safari #WebKit + #Interop2026 steht an

web-platform-tests/interop web-platform-tests Interop project. Contribute to web-platform-tests/interop development by creating an account on GitHub.

#Interop2026 is open! My top picks so far:
- @container style()
- sibling-count() / sibling-index()
- Invoker API
- calc-size() / interpolate-size()
- field-sizing: content

Vote or propose here 👉 github.com/web-platform...

Let’s push the web forward!

#WebDevs #CSS #Browsers #WebCompat

web-platform-tests/interop web-platform-tests Interop project. Contribute to web-platform-tests/interop development by creating an account on GitHub.

Seeing some nice proposals being made for #Interop2026: github.com/web-platform...

If you want to suggest one (or more), now’s the time to do so.

Notification API · Issue #1047 · web-platform-tests/interop Description Description The Notifications API allows web pages to control the display of system notifications to the end user. These are outside the top-level browsing context viewport, so therefor...

Interop 2026 is here, and so is my 3rd(?) attempt to get them to work on the Notification API! 🥳

(Please vote, and don't forget to vote for other proposals that are important to you, too!)

github.com/web-platform...

#interop2026 #interop

🚀 Apple abre la convocatoria para Interop 2026: los desarrolladores ya pueden enviar ideas para mejorar la interoperabilidad entre navegadores. Tienes hasta el 24 de septiembre para participar 👨‍💻🌐
#Apple #Interop2026 #WebDev

My #interop2026 Top 10 list:

1. ReferenceTarget
2. ReferenceTarget
3. ReferenceTarget
4. ReferenceTarget
5. ReferenceTarget
6. ReferenceTarget
7. ReferenceTarget
8. ReferenceTarget
9. ReferenceTarget
10. HTML Imports ( Aug. 19, 2013 - Dec. 15, 2014)

Call for Proposals: Interop 2026 | Igalia Igalia is an open source consultancy specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and cl...

It’s that time of year again: #interop2026 is now open for proposals from one and all! The window closes on the 24th of this month, so if there’s something you want to get in front of browser vendors to consider making more interoperable, now’s the time. More here: www.igalia.com/2025/09/04/C...

Call for Proposals: Interop 2026 | Igalia Igalia is an open source consultancy specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and cl...

#Interop2026 has opened for proposals! This annual cross-vendor project to increase browser compatibility will take your suggestions through September 24. Learn more and speak up: www.igalia.com/2025/09/04/C...