diff --git a/controllers/ManageAlbums.php b/controllers/ManageAlbums.php
index f989e6a..6f578b1 100644
--- a/controllers/ManageAlbums.php
+++ b/controllers/ManageAlbums.php
@@ -18,7 +18,7 @@ class ManageAlbums extends HTMLController
 			'form' => [
 				'action' => BASEURL . '/editalbum/',
 				'method' => 'get',
-				'class' => 'float-end',
+				'class' => 'col-md-6 text-end',
 				'buttons' => [
 					'add' => [
 						'type' => 'submit',
@@ -60,7 +60,7 @@ class ManageAlbums extends HTMLController
 			'title' => 'Manage albums',
 			'no_items_label' => 'No albums meet the requirements of the current filter.',
 			'items_per_page' => 9999,
-			'index_class' => 'float-start',
+			'index_class' => 'col-md-6',
 			'base_url' => BASEURL . '/managealbums/',
 			'get_data' => function($offset = 0, $limit = 9999, $order = '', $direction = 'up') {
 				if (!in_array($order, ['id_tag', 'tag', 'slug', 'count']))
diff --git a/controllers/ManageAssets.php b/controllers/ManageAssets.php
index 1afc85b..463ede5 100644
--- a/controllers/ManageAssets.php
+++ b/controllers/ManageAssets.php
@@ -67,7 +67,6 @@ class ManageAssets extends HTMLController
 			'title' => 'Manage assets',
 			'no_items_label' => 'No assets meet the requirements of the current filter.',
 			'items_per_page' => 30,
-			'index_class' => 'pull_left',
 			'base_url' => BASEURL . '/manageassets/',
 			'get_data' => function($offset = 0, $limit = 30, $order = '', $direction = 'down') {
 				if (!in_array($order, ['id_asset', 'title', 'subdir', 'filename']))
diff --git a/controllers/ManageErrors.php b/controllers/ManageErrors.php
index 9619753..f510c7b 100644
--- a/controllers/ManageErrors.php
+++ b/controllers/ManageErrors.php
@@ -29,11 +29,12 @@ class ManageErrors extends HTMLController
 			'form' => [
 				'action' => BASEURL . '/manageerrors/?' . Session::getSessionTokenKey() . '=' . Session::getSessionToken(),
 				'method' => 'post',
-				'class' => 'float-end',
+				'class' => 'col-md-6 text-end',
 				'buttons' => [
 					'flush' => [
 						'type' => 'submit',
 						'caption' => 'Delete all',
+						'class' => 'btn-danger',
 					],
 				],
 			],
@@ -99,7 +100,7 @@ class ManageErrors extends HTMLController
 			'sort_direction' => !empty($_GET['dir']) ? $_GET['dir'] : '',
 			'no_items_label' => "No errors to display -- we're all good!",
 			'items_per_page' => 20,
-			'index_class' => 'float-start',
+			'index_class' => 'col-md-6',
 			'base_url' => BASEURL . '/manageerrors/',
 			'get_count' => 'ErrorLog::getCount',
 			'get_data' => function($offset = 0, $limit = 20, $order = '', $direction = 'down') {
diff --git a/controllers/ManageTags.php b/controllers/ManageTags.php
index a49f9aa..ff49780 100644
--- a/controllers/ManageTags.php
+++ b/controllers/ManageTags.php
@@ -18,7 +18,7 @@ class ManageTags extends HTMLController
 			'form' => [
 				'action' => BASEURL . '/edittag/',
 				'method' => 'get',
-				'class' => 'float-end',
+				'class' => 'col-md-6 text-end',
 				'buttons' => [
 					'add' => [
 						'type' => 'submit',
@@ -65,7 +65,7 @@ class ManageTags extends HTMLController
 			'title' => 'Manage tags',
 			'no_items_label' => 'No tags meet the requirements of the current filter.',
 			'items_per_page' => 30,
-			'index_class' => 'float-start',
+			'index_class' => 'col-md-6',
 			'base_url' => BASEURL . '/managetags/',
 			'get_data' => function($offset = 0, $limit = 30, $order = '', $direction = 'up') {
 				if (!in_array($order, ['id_tag', 'tag', 'slug', 'kind', 'count']))
diff --git a/controllers/ManageUsers.php b/controllers/ManageUsers.php
index 14ef97f..cf53e24 100644
--- a/controllers/ManageUsers.php
+++ b/controllers/ManageUsers.php
@@ -18,7 +18,7 @@ class ManageUsers extends HTMLController
 			'form' => [
 				'action' => BASEURL . '/edituser/',
 				'method' => 'get',
-				'class' => 'float-end',
+				'class' => 'col-md-6 text-end',
 				'buttons' => [
 					'add' => [
 						'type' => 'submit',
@@ -94,7 +94,7 @@ class ManageUsers extends HTMLController
 			'title' => 'Manage users',
 			'no_items_label' => 'No users meet the requirements of the current filter.',
 			'items_per_page' => 30,
-			'index_class' => 'float-start',
+			'index_class' => 'col-md-6',
 			'base_url' => BASEURL . '/manageusers/',
 			'get_data' => function($offset = 0, $limit = 30, $order = '', $direction = 'down') {
 				if (!in_array($order, ['id_user', 'surname', 'first_name', 'slug', 'emailaddress', 'last_action_time', 'ip_address', 'is_admin']))