_sidebar.md

 <ul>
 <li><a href="/Home">Home</a>  
-<li><details>
-<summary><a href="/EN/Home">EN</a></summary>
+<li><a href="/EN/Home">EN</a>
 <ul>
 <li><a href="/EN/Home">Home</a></li>
-</ul>
-</details></li>
+</ul></li>
 </ul>