diff --git a/layout/article-content.ejs b/layout/article-content.ejs
index 061ec1c..abbb45c 100644
--- a/layout/article-content.ejs
+++ b/layout/article-content.ejs
@@ -35,7 +35,7 @@
 </div>
 
 <% if ( (theme.magic.enable && !theme.magic.sidebar.enable && theme.toc.enable) || (!theme.magic.enable && theme.toc.enable)) { %>
-    <div class="article-toc-container">
+    <div class="article-toc-container fade-in-down-animation">
         <%- partial('_partial/sidebar-toc') %>
     </div>
 <% } %>
\ No newline at end of file