diff --git a/index.html b/index.html
index 1f092e2..7940841 100644
--- a/index.html
+++ b/index.html
@@ -3,11 +3,14 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <!-- Relie le fichier CSS -->
     <link rel="stylesheet" href="style.css">
     <title>Alan Turing</title>
 </head>
 <body style="display: flex;">
+      <!----------Navigation---------->
     <header>
+       
         <div class="icon-nav"></div>
         <ul class="header-list">
             <li style="background-color: #1F1F1F;"><a href="./index.html">Accueil</a></li>
@@ -25,9 +28,11 @@
             <li><a href="./source.html">Sources</a></li>
         </ul>
     </header>
+      <!----------Navigation---------->
 
     <main class="main-accueil">
         <img class="accueil-img" src="./imgs/alan_background.jpg" alt="">
+        
         <section class="accueil">
             <div>
                 <p>Alan Turing the father of modern computer science and artificial intelligence</p>
diff --git a/introduction.html b/introduction.html
index 62d5c08..7e651aa 100644
--- a/introduction.html
+++ b/introduction.html
@@ -4,10 +4,12 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+       <!-- Relie le fichier CSS -->
     <link rel="stylesheet" href="style.css">
     <title>Introduction</title>
 </head>
 <body style="display: flex;">
+      <!----------Navigation---------->
     <header>
         <div class="icon-nav"></div>
         <ul class="header-list">
@@ -26,6 +28,7 @@
             <li><a href="./source.html">Sources</a></li>
         </ul>
     </header>
+      <!----------Navigation---------->
     <main class="introduction">
         <section>
             <div>
diff --git a/oeuvres.html b/oeuvres.html
index d66c1ba..6147880 100644
--- a/oeuvres.html
+++ b/oeuvres.html
@@ -4,11 +4,13 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+       <!-- Relie le fichier CSS -->
     <link rel="stylesheet" href="style.css">
     <title>Oeuvres</title>
 </head>
 
 <body style="display: flex;">
+     <!----------Navigation---------->
     <header>
         <div class="icon-nav"></div>
         <ul class="header-list">
@@ -27,7 +29,7 @@
             <li><a href="./source.html">Sources</a></li>
         </ul>
     </header>
-
+ <!----------Navigation---------->
 <main class="main-oeuvres">
 
     <figure id="ch1">
diff --git a/source.html b/source.html
index 4171583..d58144c 100644
--- a/source.html
+++ b/source.html
@@ -3,10 +3,12 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <!-- Relie le fichier CSS -->
     <link rel="stylesheet" href="style.css">
     <title>Alan Turing</title>
 </head>
 <body style="display: flex;">
+    <!----------Navigation---------->
     <header>
         <div class="icon-nav"></div>
         <ul class="header-list">
@@ -25,11 +27,12 @@
             <li style="background-color: #1F1F1F;" > <a href="./source.html">Sources</a></li>
         </ul>
     </header>
+    <!----------Navigation---------->
     <main class="Sources">
         <section>
    
             <header>
-                <!-- <h1>sources</h1> -->
+                
                 <h1> Réference </h1>
             </header>
             
diff --git a/style.css b/style.css
index 230c92b..4179fd1 100644
--- a/style.css
+++ b/style.css
@@ -540,23 +540,7 @@ main .accueil img{
     font-size: 2.5em;
 }
 
-/* p,h4,h1,h2 {
-    animation-name: slide-in;
-    animation-duration: 2s;
-    animation-fill-mode: forwards;
-  }
 
-  @keyframes slide-in {
-    from {
-      transform: translateX(-100%);
-      opacity: 0;
-    }
-
-    to {
-      transform: translateX(0);
-      opacity: 1;
-    }
-  } */
 
 /*============================================ Oeuvres ============================================*/
 
@@ -635,48 +619,6 @@ main .accueil img{
 
 /*============================================ Sources ============================================*/
 
-/*Arrow up*/
-/* main .btn-up{
-    position: fixed;
-    right: 20px;
-    bottom: 20px;
-    height: 40px;
-    width: 40px;
-    cursor: pointer;
-    background-color: #ccc;
-    border-radius: 50%;
-}
-main .btn-up .arrow-up{
-    position: absolute;
-    top: 50%;
-    left: 50%;
-    transform: translate(-50%,-50%);
-}
-
-main .btn-up .arrow-up:nth-of-type(2){
-    top: calc(50% + 8px);
-}
-main .arrow-up::before{
-    content: '';
-    position: absolute;
-    top: calc(50% - 12px);
-    left: 50%;
-    transform: translate(-50%, -50%);
-    border-style: solid;
-    border-width: 15px;
-    border-color: transparent transparent #484848 transparent;
-}
-
-main .arrow-up::after{
-    content: '';
-    position: absolute;
-    top: calc(50% - 8px);
-    left: 50%;
-    transform: translate(-50%,-50%);
-    border-style: solid;
-    border-width: 15px;
-    border-color: transparent transparent white transparent;
-} */
 
 
 /*============================================ MAIN ============================================*/
