diff --git a/sequences/web/epoques/2026.html b/sequences/web/epoques/2026.html
index 0d7c3da..963b936 100644
--- a/sequences/web/epoques/2026.html
+++ b/sequences/web/epoques/2026.html
@@ -2,6 +2,7 @@
 <html lang="fr">
 <head>
 <meta charset="utf-8">
+<script>document.documentElement.classList.add("js");</script>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Cours NSI / SNT / Socio</title>
 
@@ -86,10 +87,10 @@ h1 {
 /* Apparition au defilement. La preference systeme "reduire les animations"
    est respectee juste en dessous : sans cela, la page serait penible pour
    les personnes sensibles au mouvement. */
-.apparait { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
-.apparait.visible { opacity: 1; transform: none; }
+.js .apparait { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
+.js .apparait.visible { opacity: 1; transform: none; }
 @media (prefers-reduced-motion: reduce) {
-  .apparait { opacity: 1; transform: none; transition: none; }
+  .js .apparait { opacity: 1; transform: none; transition: none; }
   .carte:hover { transform: none; }
 }