diff --git a/index.html b/index.html
index a12cfee..a0a48fe 100644
--- a/index.html
+++ b/index.html
@@ -131,14 +131,14 @@
 
                           <!-- MESSAGE DE BIENVENUE -->
                     <aside>
-                      <button tabindex="0" type="button" popovertarget="msgWindow" popoveraction="show" class="iconBtnStyle" id="openMsg" aria-label="ouvrir le message de bienvenue">
+                      <button tabindex="0" type="button" popovertarget="msgWindow" popoveraction="show" aria-controls="msgWindow" class="iconBtnStyle" id="openMsg" aria-label="ouvrir le message de bienvenue">
                         <svg class="icon" viewBox="0 0 40.19 38.9" aria-hidden="true">
                           <path d="M33.56,0H0v38.9h40.19V0h-6.62ZM34.91,33.62H5.28V8.09l15.05,19.04,14.58-18.56v25.05ZM11.12,5.28h18.39l-9.25,12.02L11.12,5.28Z"/>
                         </svg>
                       </button>
 
-                      <div id="msgWindow" popover="auto">
-                        <dialog tabindex="-1" class="floatingWindow" aria-label="Message de bienvenue du LOL">
+                      <div  id="msgWindow" popover="auto">
+                        <dialog tabindex="-1" id="msgPanel" aria-expanded="false" class="floatingWindow" aria-label="Message de bienvenue du LOL">
                           <h4 class="title">
                             Bienvenue sur le site du LOL!
                             <button tabindex="0" class="iconBtnStyle" popovertarget="msgWindow" popoveraction="hide" aria-label="Fermer la fenêtre">