some titles

src/index.html

@@ -20,14 +20,21 @@
         </section>
 
         <section id="galerie">
+            <header>
+                <h2>Écoutez nous</h2>
+            </header>
         </section>
 
         <section id="audio">
+            <header>
+                <h2>Écoutez nous</h2>
+            </header>
         </section>
 
         <section id="contact">
             <header>
                 <h2>Contactez nous</h2>
+            </header>
             <form action="http://localhost:8080/submit" method="POST">
                 <input type="hidden" name="token" value="s0y6WANzU1XnYERoJxMwekP9pqilSVLK5Gbf3hmZadHB2rQ4u8" />
                 <div>