DivMagic Blog

Discover how GitHub's engineering team improved global site performance by shipping 38% more CSS while reducing render-blocking stylesheets. Learn the technical strategy behind preferential CSS loading and concurrent rendering to cut key metrics like FCP and TTI.

Discover how GitHub improved site performance by 60% on key metrics by shipping more CSS. This deep dive explains the CSS containment strategy and how you can apply the same performance tricks in your frontend workflow.