CSS Selectors You're Not Using (But Should Be)
You know div, .class, and #id. But CSS has dozens of selectors that replace JavaScript event listeners, eliminate helper classes, and handle UI state in pure CSS. This guide covers the underused ones actually worth learning — :has(), :focus-within, :user-valid, :nth-child(of selector), :where()'s zero-specificity trick, the :checked + ~ state machine, :target for routable UI, @scope, :defined, :dir(), and more.
