diff --git a/web/app/controllers/groups.php b/web/app/controllers/groups.php
index d29e204..2671fea 100644
--- a/web/app/controllers/groups.php
+++ b/web/app/controllers/groups.php
@@ -71,10 +71,13 @@
 		<?php $new_group_form->printHTML(); ?>
 	<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
 	</div>
-</div>
 <?php endif ?>
 <?php endif ?>
 
+<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
+</div>
+<?php endif ?>
+
 <?php
         $groups_caption = UOJLocale::get('groups');
     $users_caption = UOJLocale::get('users count');
diff --git a/web/app/controllers/problem_lists.php b/web/app/controllers/problem_lists.php
index 1b29b85..e45dacb 100644
--- a/web/app/controllers/problem_lists.php
+++ b/web/app/controllers/problem_lists.php
@@ -86,9 +86,11 @@
 		<?php $new_list_form->printHTML(); ?>
 	<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
 	</div>
-</div>
 <?php endif ?>
 <?php endif ?>
+<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
+</div>
+<?php endif ?>
 
 <?php
 	$problem_list_caption = UOJLocale::get('problems::problem list');
diff --git a/web/app/controllers/problem_set.php b/web/app/controllers/problem_set.php
index c3c11e7..0c241a6 100644
--- a/web/app/controllers/problem_set.php
+++ b/web/app/controllers/problem_set.php
@@ -173,9 +173,13 @@ EOD;
 		<?php $new_problem_form->printHTML(); ?>
 	<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
 	</div>
+<?php endif ?>
+<?php endif ?>
+
+<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
 </div>
 <?php endif ?>
-<?php endif ?>
+
 <div class="row">
 	<div class="col-sm-4">
 		<?= HTML::tablist($tabs_info, $cur_tab, 'nav-pills') ?>