Firefox for Web Developers on Mythryl: “Firefox 159 has landed! This is a pretty big one for web dev stuff…”

@webdevs.firefox.com

Firefox 159 has landed! This is a pretty big one for web dev stuff: 🎉 CSS scroll-driven animations, both scroll() and view(). 🎉 Scoped custom element registries. 🎉 Streaming sanitization of HTML. And more! developer.mozilla.org/en-US/docs/M...

developer.mozilla.orgFirefox 159 release notes for developers (Stable) - Mozilla | MDNThis article provides information about the changes in Firefox 159 that affect developers. Firefox 159 was released on October 27, 2026.

27/10/26, 2:15 pm8 reposts49 likes

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