diff --git a/web/tailwind.config.js b/web/tailwind.config.js
index 8c72e89b..7a880b90 100644
--- a/web/tailwind.config.js
+++ b/web/tailwind.config.js
@@ -3,7 +3,7 @@ const defaultTheme = require('tailwindcss/defaultTheme')
 module.exports = {
   mode: 'jit',
   purge: ['./pages/**/*.{js,ts,jsx,tsx}', './components/**/*.{js,ts,jsx,tsx}'],
-  darkMode: false, // or 'media' or 'class'
+  darkMode: 'media', // checks CSS @media(prefers-color-scheme)
   theme: {
     fontFamily: Object.assign(
       { ...defaultTheme.fontFamily },