diff --git a/src/frontend/apps/desk/src/features/header/ApplicationsMenu.tsx b/src/frontend/apps/desk/src/features/header/ApplicationsMenu.tsx
index 289bbc0..b8a64fa 100644
--- a/src/frontend/apps/desk/src/features/header/ApplicationsMenu.tsx
+++ b/src/frontend/apps/desk/src/features/header/ApplicationsMenu.tsx
@@ -1,4 +1,3 @@
-import Head from 'next/head';
 import Script from 'next/script';
 import React from 'react';
 
@@ -12,15 +11,13 @@ import React from 'react';
  * This PoC has been created by @manuhabitela.
  *
  * It includes external CSS and JavaScript files for styling and functionality.
+ *
+ * Style has to be included as well: https://suite-numerique-gaufre.osc-fr1.scalingo.io/public/styles/gaufre-vanilla.css \
+ * To respect next.js standards, the css is included using the `_document.ts` component.
+ * @see https://github.com/numerique-gouv/people/blob/main/src/frontend/apps/desk/src/pages/_document.tsx#L8
  */
 export const ApplicationsMenu = () => (
   <>
-    <Head>
-      <link
-        rel="stylesheet"
-        href="https://suite-numerique-gaufre.osc-fr1.scalingo.io/public/styles/gaufre-vanilla.css"
-      />
-    </Head>
     <Script
       src="https://suite-numerique-gaufre.osc-fr1.scalingo.io/public/widget.js"
       strategy="lazyOnload"
diff --git a/src/frontend/apps/desk/src/pages/_document.tsx b/src/frontend/apps/desk/src/pages/_document.tsx
index 282e0d3..9ab19cf 100644
--- a/src/frontend/apps/desk/src/pages/_document.tsx
+++ b/src/frontend/apps/desk/src/pages/_document.tsx
@@ -2,10 +2,21 @@ import { Head, Html, Main, NextScript } from 'next/document';
 
 import '@/i18n/initI18n';
 
+/**
+ * About the Gaufre Vanilla CSS
+ * To respect next.js standards, the css is included here.
+ * This css is used with features/header/ApplicationsMenu component.
+ * If the ApplicationsMenu component is removed, this css can be removed as well.
+ */
 export default function RootLayout() {
   return (
     <Html lang="en">
-      <Head />
+      <Head>
+        <link
+          rel="stylesheet"
+          href="https://suite-numerique-gaufre.osc-fr1.scalingo.io/public/styles/gaufre-vanilla.css"
+        />
+      </Head>
       <body suppressHydrationWarning={process.env.NODE_ENV === 'development'}>
         <Main />
         <NextScript />
