Utility Classes and Utility-First CSS

A utility class does one small job, such as .text-center or .mt-4, and a few of them in a utilities layer handle one-off tweaks without new rules, while utility-first frameworks build whole pages from thousands of them.

Updated

Cheat sheet: Utility Classes and Utility-First CSS
Category
CSS
Level
Journeyman
Tags
Cascade layer, CSS, Spacing Utilities, Utility Class (css), Utility-First, web-development