css-order

Installation
SKILL.md

Order CSS files correctly

Incorrect CSS/JS order causes render-blocking delays and FOUC—users see unstyled content while waiting for styles to load.

Quick Reference

  • Load all CSS files before JavaScript in the document head
  • Use async/defer for non-critical JavaScript
  • Inline critical CSS for faster first paint
  • Prevents FOUC (Flash of Unstyled Content)

Check

Verify that all CSS files are loaded before JavaScript files in the document head to prevent render-blocking and ensure proper styling precedence.

Fix

Reorganize head section to load all CSS files before JavaScript files, except for asynchronous scripts that don't block rendering.

Installs
6
GitHub Stars
73.9K
First Seen
Aug 11, 2026
css-order — thedaviddias/front-end-checklist