Stop using JavaScript to solve CSS problems

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Modern CSS features like content-visibility, container queries, and scroll-driven animations now handle tasks developers traditionally solved with JavaScript. Content-visibility provides native virtualization without libraries like react-window, container queries enable responsive design based on parent containers rather than viewport width, and scroll-driven animations run on the compositor thread for better performance. While JavaScript remains necessary for truly infinite lists, precise measurements, and dynamic layouts, most common use cases benefit from CSS-first solutions with simpler code and better performance.

#webdev

#javascript

#react

#performance

#css

Dec 04, 2025•12m read time•From blog.logrocket.com

Table of contents

The React virtualization problem What content-visibility actually does The container query problem Over 200k developers use LogRocket to create better digital experiences The scroll animation problem When to stick with JavaScript workarounds Conclusion Is your frontend hogging your users' CPU?