How to Audit Your CSS for Unused Rules and Reduce Load Time by 60%

Every CSS file ships rules that never match a single element on the page. In my recent audit of a mid-size web app with 14 production pages, I found 2,847 unused selectors across 3 combined stylesheets totaling 340 KB. Removing them cut the CSS payload from 340 KB to 132 KB — a 61% reduction in file