diff --git a/src/index.html b/src/index.html
index 431897e..c66a446 100644
--- a/src/index.html
+++ b/src/index.html
@@ -139,7 +139,7 @@ <h3>${t('acknowledgements.title')}</h3>
                     </li>
                 </ul>
             </section>
-            <div class="offcanvas offcanvas-end" id="settings">
+            <div class="offcanvas offcanvas-end" tabindex="-1" id="settings">
                 <div class="offcanvas-header">
                     <h3 class="offcanvas-title">${t('settings.title')}</h3>
                     <button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>