diff --git a/science-quest/package.json b/science-quest/package.json
index 9142ee4..b91d745 100644
--- a/science-quest/package.json
+++ b/science-quest/package.json
@@ -9,6 +9,8 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "bootstrap": "^5.3.3",
+    "sass": "^1.71.1",
     "vue": "^3.4.15",
     "vue-router": "^4.3.0"
   },
diff --git a/science-quest/src/App.vue b/science-quest/src/App.vue
index f698c64..9e3651b 100644
--- a/science-quest/src/App.vue
+++ b/science-quest/src/App.vue
@@ -11,7 +11,6 @@ export default {
   <Titre />
 
   <main>
-    <!-- todo -->
     <router-view></router-view>
   </main>
 </template>
diff --git a/science-quest/src/components/Titre.vue b/science-quest/src/components/Titre.vue
index 038084b..43332ed 100644
--- a/science-quest/src/components/Titre.vue
+++ b/science-quest/src/components/Titre.vue
@@ -9,60 +9,48 @@ export default{
         }
     }
 }
-
 </script>
 
 <template>
-    <header>
-        <!-- logo temporaire-->
+        <!-- logo temporaire
         <img alt="Vue logo" src="../assets/logo.svg" />
-        <h1>
-            <a href="/">
-                {{ nomApp }}
-            </a>
-        </h1>
-        <div class="espacement">
-            <!-- espacement pour mettre les boutons a droite-->
-        </div>
-
-        <!-- liste de trucs a cliquer; accueil, jouer, langues?-->
-        <nav>
-            <!-- todo : component pour faire type de bouton (normal, menu déroulant)-->
-            <a href="#/">Accueil</a>
-            <a href="#/jouer">Jouer</a>
-        </nav>
-    </header>
+        -->
+<nav class="navbar navbar-expand-lg bg-light">
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#/">{{ nomApp }}</a>
+    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarSupportedContent">
+      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
+        <!--li class="nav-item">
+            todo : trouver un moyen de gerer la page courante
+          <a class="nav-link active" aria-current="page" href="#">Accueil</a>
+        </li-->
+        <li class="nav-item">
+          <a class="nav-link" href="#">Accueil</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
+            Jeux
+          </a>
+          <ul class="dropdown-menu">
+            <li><a class="dropdown-item" href="#">Qui est-ce</a></li>
+            <li><a class="dropdown-item" href="#">Kahoot</a></li>
+            <li><hr class="dropdown-divider"></li>
+            <li><a class="dropdown-item disabled" href="#">autre jeu</a></li>
+          </ul>
+        </li>
+      </ul>
+      <form class="d-flex" role="search">
+        <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-success" type="submit">Search</button>
+      </form>
+    </div>
+  </div>
+</nav>
 </template>
 
 <style scoped>
-header{
-    width:100%;
-    height: 4em;
-    background-color:gold;
-    display:flex;
-    flex:auto;
-    flex-direction: row;
-}
-
-.espacement{
-    flex:auto
-}
-
-h1{
-    font-size: 2em;
-}
-
-nav{
-    display:flex;
-    flex:0;
-    flex-direction: row;
-}
-
-nav a{
-    background-color: aqua;
-    vertical-align: center;
-    padding:1em;
-    height:100%;
-}
 
 </style>
\ No newline at end of file
diff --git a/science-quest/src/main.js b/science-quest/src/main.js
index ba7661e..b642272 100644
--- a/science-quest/src/main.js
+++ b/science-quest/src/main.js
@@ -4,6 +4,10 @@ import { createRouter, createWebHashHistory } from 'vue-router'
 import { createApp } from 'vue'
 import App from './App.vue'
 
+//importer bootstrap
+import * as bootstrap from 'bootstrap'
+import './scss/styles.scss'
+
 //importer les components pour le routing
 import PagePrincipale from "./components/PagePrincipale.vue"
 import NotFound from "./components/erreurs/NotFound.vue"
diff --git a/science-quest/src/scss/styles.scss b/science-quest/src/scss/styles.scss
new file mode 100644
index 0000000..d8dc8d2
--- /dev/null
+++ b/science-quest/src/scss/styles.scss
@@ -0,0 +1 @@
+@import "bootstrap/scss/bootstrap";
\ No newline at end of file