1<!DOCTYPE html>2<html lang="de" data-bs-theme="light">3<script>4 // localStorage überschreibt den PHP-Standardwert sofort – kein Flackern5 (function() {6 var saved = localStorage.getItem('theme');7 if (saved = 'dark' || saved = 'light') {8 document.documentElement.setAttribute('data-bs-theme', saved);9 }10 })();Alte darstellung
