diff --git a/django/contrib/admin/static/admin/css/responsive.css b/django/contrib/admin/static/admin/css/responsive.css
index fbf0d88b40..9ef585b350 100644
--- a/django/contrib/admin/static/admin/css/responsive.css
+++ b/django/contrib/admin/static/admin/css/responsive.css
@@ -287,9 +287,6 @@ input[type="submit"], button {
         flex: 0 1 auto;
     }
 
-    .stacked select {
-        margin-bottom: 0;
-    }
 
     .stacked .selector-available, .stacked .selector-chosen {
         width: auto;
diff --git a/django/contrib/admin/static/admin/css/widgets.css b/django/contrib/admin/static/admin/css/widgets.css
index 43271f8c08..85cb9c48de 100644
--- a/django/contrib/admin/static/admin/css/widgets.css
+++ b/django/contrib/admin/static/admin/css/widgets.css
@@ -235,9 +235,9 @@
     padding: 3px 3px 3px 5px;
 }
 
-.stacked .selector-chooseall, .stacked .selector-clearall {
-    display: none;
-}
+/* .stacked .selector-chooseall, .stacked .selector-clearall {
+    display: block;
+} */
 
 .stacked .selector-add {
     background: url(../img/selector-icons.svg) 0 -48px no-repeat;
diff --git a/tests/admin_widgets/tests.py b/tests/admin_widgets/tests.py
index 7588c2cc32..a384920c44 100644
--- a/tests/admin_widgets/tests.py
+++ b/tests/admin_widgets/tests.py
@@ -1297,13 +1297,12 @@ class HorizontalVerticalFilterSeleniumTests(AdminWidgetSeleniumTestCase):
         remove_all_button = "#id_%s_remove_all" % field_name
         self.assertEqual(self.is_disabled(choose_button), choose_btn_disabled)
         self.assertEqual(self.is_disabled(remove_button), remove_btn_disabled)
-        if mode == "horizontal":
-            self.assertEqual(
-                self.is_disabled(choose_all_button), choose_all_btn_disabled
-            )
-            self.assertEqual(
-                self.is_disabled(remove_all_button), remove_all_btn_disabled
-            )
+        self.assertEqual(
+            self.is_disabled(choose_all_button), choose_all_btn_disabled
+        )
+        self.assertEqual(
+            self.is_disabled(remove_all_button), remove_all_btn_disabled
+        )
 
     def execute_basic_operations(self, mode, field_name):
         from selenium.webdriver.common.by import By
@@ -1374,16 +1373,7 @@ class HorizontalVerticalFilterSeleniumTests(AdminWidgetSeleniumTestCase):
         )
 
         # Click 'Remove all' --------------------------------------------------
-        if mode == "horizontal":
-            self.selenium.find_element(By.ID, remove_all_button).click()
-        elif mode == "vertical":
-            # There 's no 'Remove all' button in vertical mode, so individually
-            # select all options and click 'Remove'.
-            for option in self.selenium.find_elements(
-                By.CSS_SELECTOR, to_box + " > option"
-            ):
-                option.click()
-            self.selenium.find_element(By.ID, remove_button).click()
+        self.selenium.find_element(By.ID, remove_all_button).click()
         self.assertSelectOptions(
             from_box,
             [