Web Security · Published Nov 2026 · 282 Views

Building Light/Dark Mode with Pure CSS Custom Properties & JS

Building Light/Dark Mode with Pure CSS Custom Properties & JS
A step-by-step guide to building persistent dual-theme support with zero third-party framework dependencies.
Modern users expect seamless dark mode transitions. Using CSS variables, localStorage, and clean JS toggle listeners, you can build accessible theme toggles in minimal lines of code...
Alex Mercer

Written by Alex Mercer

Senior Full-Stack PHP Architect & UI/UX Designer crafting secure scalable web engines.