diff --git a/style.css b/style.css
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+++ b/style.css
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+/* Conteneur principal pour éviter les styles flex globaux */
+.main-container {
+    width: 100%;
+    max-width: 900px;
+    margin: 0 auto;
+    padding: 20px;
+}
+
+/* Bouton retour aligné à droite */
+.btn-retour {
+    float: right;
+    margin: 10px; /* Aligne le contenu à droite */
+    margin-bottom: 20px;
+}
+
+.btn-retour a img {
+    display: inline-block; /* Assure que l'image reste au format bouton */
+}
+body {
+    font-family: Georgia, "Times New Roman", Times, serif;
+    font-size: 11pt;
+    background-color: #f4f4f4;
+    color: #333;
+    background-image: url(../quest-rando/images/ciel-overlay2.jpg);
+    background-attachment: fixed;
+    margin: 0;
+    padding: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    flex-direction: column;
+}
+
+h1 {
+    color: #090090;
+}
+h2 {
+    color: #090090;
+}
+h3 {
+    color: #090090;
+}
+
+form {
+    background: #fff;
+    padding: 2% 3%;
+    margin-bottom: 20px;
+    box-shadow: 0 2px 4px grey;
+    border-radius: 5px;
+    max-width: 800px;
+    width: 100%;
+}
+
+input[type="text"],
+textarea {
+    font-size: 11pt;
+    width: 100%;
+    padding: 10px;
+    margin-bottom: 10px;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+}
+
+button {
+    background: #3498db;
+    color: white;
+    padding: 10px 20px;
+    border: none;
+    border-radius: 5px;
+    cursor: pointer;
+}
+
+button:hover {
+    background: #2980b9;
+}
+
+.annonce {
+    background: #fff;
+    padding: 10px;
+    margin-bottom: 10px;
+    box-shadow: 0 2px 4px grey;
+    border-radius: 5px;
+    max-width: 900px;
+    width: 100%;
+}
+
+.annonce small {
+    color: #888;
+}
+/* Bouton haut page */
+/* Effet fluide */
+
+/* Style du bouton */
+#scrollToTop {
+    position: fixed;
+    bottom: 20px;
+    right: 150px; /*Position*/
+    padding: 10px 15px;
+    font-size: 16px;
+    background-color: #007bff;
+    color: #fff;
+    border: none;
+    border-radius: 5px;
+    cursor: pointer;
+    opacity: 0;
+    visibility: hidden;
+    transition:
+        opacity 0.3s,
+        visibility 0.3s;
+}
+
+/* Afficher le bouton lorsqu'on est en bas de page */
+#scrollToTop.show {
+    opacity: 1;
+    visibility: visible;
+}