When building a large website with a sizeable codebase, CSS can pose significant challenges. Meta faced similar issues, leading to the creation and open-sourcing of StyleX, a scalable CSS solution. StyleX merges CSS-in-JS’s ease of use with static CSS’s performance. It offers atomic component styling, deduplicates definitions to minimize bundle size, and provides a straightforward API for developers.
StyleX is now a standard at companies like Figma and Snowflake. At Meta, it’s the default styling system for Facebook, Instagram, WhatsApp, Messenger, and Threads.
This episode of the Meta Tech Podcast features Melissa, a Meta software engineer and StyleX maintainer. Pascal Hartig discusses StyleX’s development, the impact of open source on the project, and engagement with large companies adopting StyleX.
Download or listen to the episode below:
Find this episode on your preferred podcast platform, including:
The Meta Tech Podcast showcases Meta engineers’ work, from foundational frameworks to user-facing features.
Share feedback on Instagram, Threads, or X.
Explore career opportunities at Meta by visiting the Meta Careers page.