diff --git a/index.html b/index.html
index 38240cd..8960a11 100644
--- a/index.html
+++ b/index.html
@@ -33,7 +33,7 @@
         <div id="previous-concerts-list" class="concerts-list"></div>
       </section>
       <section id="booklet" class="booklet" hidden>
-        <div class="booklet-header">
+        <div id="booklet-header" class="booklet-header">
           <h2 id="concert-title" class="booklet-header-title"></h2>
           <div id="concert-subtitle" class="booklet-header-subtitle"></div>
         </div>