Issue #636

NewsletterFebruary 19, 2026Zoran Jambor

Learn what Interop 2026 entails, how to avoid common CSS mistakes, how to use Touch ID for SUDO, how to build flexible typographic scales, and more.

Headlines

Announcing Interop 2026

Yulun Wu and Jen Simmons announce Interop 2026, continuing the mission of improving cross-browser interoperability.

► 5 CSS Fouls That I See Way Too Often

Kevin Powell outlines some common CSS mistakes.

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Web Performance: A Deep Dive

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🎥 DevTools network throttling: a look under the hood – This video explains how Chrome implements network throttling and what the results can and can’t tell you.

CSS Weekly Blog

How To Use Touch ID for SUDO on macOS

A hands-on guide to setting up macOS to use Touch ID for sudo—so you don't have to type your password every time manually.

Building Typographic Scales in CSS with :heading(), sibling-index(), and pow()

Stuart Robson shows how to build flexible, mathematical typographic scales using :heading(), sibling-index(), and pow() for cleaner CSS design systems.

The Corner Cases of Implementing CSS corner-shape in Blink

Noam Rosenthal shares the story about the complexity of implementing the corner-shape feature.

CSS Animation Triggers: Playing animations on scroll without scrubbing. It's a match!

Brecht De Ruyte shows how CSS scroll-triggered animations let you use scroll position to determine when animations play.

Spiral Scrollytelling in CSS With sibling-index()

Lee Meyer demonstrates how to arrange text in a spiral that animates as a vortex on scroll.

Anchored Menus and a Lesson in Scoping

Chris Coyier explains how anchor-scope can be useful for button/menu setups that will appear multiple times on the same page.

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The last few years have seen leaps in HTML, CSS, and JavaScript. If you haven’t kept up, Web Day Out is for you.

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