diff --git a/assets/style.css b/assets/style.css
index 6d7d1b9..58d444d 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -166,6 +166,15 @@ header hr {
     border: 8px solid var(--primary-hover) ;
     background-color: var(--third-bg);
     margin-top: 10px;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+    max-height: 0;
+    transition: max-height 0.3s ease;
+}
+
+.navsite_item:hover .navpage_list {
+    max-height: 200px;
 }
 
 a.navpage_link{