CSS-in-JS: Performance Issues and the Case for Returning to Native CSS
By
meistro
Front-window bakery material. Catches the eye, delivers the goods.
Summary
The article critiques CSS-in-JS (Cascading Style Sheets in JavaScript) as a failed approach to frontend styling that promised elegance but delivered performance problems, unreadable code, and hydration bugs. The author argues that CSS-in-JS represents over-engineering that performs worse than traditional CSS, creates runtime overhead, and leads to less maintainable code. The piece advocates for returning to native CSS solutions for faster, more maintainable web applications.
Key quotes
· 4 pulledCSS-in-JS was supposed to free us from global namespace nightmares and styling spaghetti. Instead, it wrapped us in a shiny new layer of chaos — one that performs worse, reads worse, and somehow costs more CPU cycles to do what a plain stylesheet did perfectly fine two decades ago.
This is not evolution; I'd call it over-engineering disguised as progress.
From Liberation to Performance Lock-In
We were promised elegance. What we got was runtime CSS parsing, unreadable class names, and hydration bugs straight out of hell.
You might also wanna read

CSS @scope Rule: A Native Solution for Scoped Styles and Component Isolation
The article discusses the new CSS @scope rule as a solution to the challenges of maintaining CSS in complex modern interfaces. It explains h

CSS Wrapped 2025: How CSS Evolves to Handle Logic, State, and Complex Interactions
The article discusses the 2025 CSS Wrapped report, highlighting how CSS has evolved beyond simple styling to handle logic, state, and comple

Practical Guide to Implementing CSS Cascade Layers in Legacy Codebases
This article provides a practical, real-world guide to integrating CSS Cascade Layers into existing legacy codebases. It focuses on the actu

CSS Masonry Layout: Native Browser Support Eliminates Need for JavaScript Libraries
The article explores the upcoming native CSS Masonry layout feature, which will eliminate the need for JavaScript libraries to create masonr

Understanding CSS Specificity: Comparing Cascade Layers, BEM, and Utility Classes
The article explores the challenges of CSS specificity, comparing approaches like CSS Cascade Layers, BEM, and Utility Classes for better co

The Evolution of CSS: From Presentational Styling to a Smarter, Logic-Driven Language
Gabriel Shoyombo explores the evolution of CSS from a purely presentational language into one with growing logical capabilities, examining f
