diff --git a/tailwind.config.cjs b/tailwind.config.cjs
index 53ba1ac..2fd200d 100644
--- a/tailwind.config.cjs
+++ b/tailwind.config.cjs
@@ -4,6 +4,7 @@ const defaultTheme = require('tailwindcss/defaultTheme');
 /** @type {import('tailwindcss').Config} */
 const config = {
   content: ['src/**/*.{html,js,svelte,ts}'],
+  darkMode: 'class',
 
   theme: {
     extend: {