Improving site performance by shipping more CSS

The Primer Design System powers many of the experiences you see on GitHub today. From buttons to banners to breadcrumbs, these foundational components are required to be accessible, flexible, and performant across a wide variety of scenarios. Back in 2023, the number of components on certain pages began to explode. This led to several performance-related challenges with our existing CSS-in-JS solu

[nguyen-oi]

CSS-in-JSの墓場。結局ネイティブが一番速くて管理しやすいっていう一周回った感

[mkusaka]

github.comのCSS-in-JSをCSS Modulesへ完全移行し、SSR時間を55%短縮・初期化25%削減した経緯