4 posts
The browser cannot paint until it builds the CSSOM. CSS in an external file means a round trip before the first pixel. Inlining critical CSS removes that.
Budget Android devices run your JS 5-10x slower than your MacBook. Content-visibility, CSS containment, touch scroll, and real debugging on low-end hardware.
How Meta StyleX compiles JS-authored styles into atomic static CSS. No runtime injection, smaller bundles, and why the build-time approach matters at scale.
Browsers share one CSS model; Figma uses WASM and GPU shaders. Where design-to-code breaks: radius, strokes, blur, gap, and what to verify before you build.