Hide the search/sort form to the spoiler for Userlist page

app/templates/userlist.forkbb.php

@@ -32,9 +32,12 @@
 @if ($form = $p->form)
     <section class="f-main f-userlist-form">
       <h2>{!! __($p->user->searchUsers ? 'User search head' : 'User sort head') !!}</h2>
-      <div class="f-fdiv">
+      <details>
+        <summary>{!! __($p->user->searchUsers ? 'User search head' : 'User sort head') !!}</summary>
+        <div class="f-fdiv">
     @include ('layouts/form')
-      </div>
+        </div>
+      </details>
     </section>
 @endif
 @if ($p->userList)

public/style/ForkBB/style.css

@@ -157,6 +157,10 @@ body,
   resize: vertical;
 }
 
+#fork summary {
+  cursor: pointer;
+}
+
 #fork select {
   background-color: #D3B58D;
 }
@@ -1764,10 +1768,6 @@ body,
   padding-left: 1.5rem;
 }
 
-#fork .f-bb-spoiler > summary {
-  cursor: pointer;
-}
-
 #fork .f-bb-s-body {
   padding: 0.625rem;
   border-left: 0.1875rem solid #AA7939;