Issue #2194807 by longwave, tim.plunkett: Remove obsolete CSS for language admin form.

core/modules/language/language.admin.inc

@@ -40,7 +40,7 @@ function theme_language_negotiation_configure_form($variables) {
 
   foreach ($form['#language_types'] as $type) {
     $rows = array();
-    $title = '<h4 class="label">' . $form[$type]['#title'] . '</h4>';
+    $title = '<h2>' . $form[$type]['#title'] . '</h2>';
     $description = '<div class="description">' . $form[$type]['#description'] . '</div>';
 
     foreach ($form[$type]['title'] as $id => $element) {

core/modules/language/lib/Drupal/language/Form/NegotiationConfigureForm.php

@@ -117,6 +117,7 @@ public function buildForm(array $form, array &$form_state) {
     $form['actions'] = array('#type' => 'actions');
     $form['actions']['submit'] = array(
       '#type' => 'submit',
+      '#button_type' => 'primary',
       '#value' => $this->t('Save settings'),
     );
 

core/themes/seven/style.css

@@ -1717,11 +1717,3 @@ details.fieldset-no-legend {
 .js .form-actions .dropbutton-multiple.open .dropbutton-action:hover {
   background-color: #50a0e9;
 }
-
-/* Language Admin UI */
-.page-admin-config-regional-language-detection .table-language-group {
-  margin-bottom: 3em;
-}
-.page-admin-config-regional-language-detection .form-actions {
-  margin-top: -2em;
-}