Resolve #3318079 Demo project markup & css

css/elasticsearch_search_api.css

+[dir="ltr"] ul.facet {
+    margin-left: 0;
+}
+[dir="rtl"] ul.facet {
+    margin-right: 0;
+}
+li.facet-item {
+    list-style: none;
+}

elasticsearch_search_api.libraries.yml

@@ -19,3 +19,7 @@ inline-autocomplete:
     - core/jquery
     - core/drupal.ajax
     - core/drupalSettings
+styles:
+  css:
+    layout:
+      css/elasticsearch_search_api.css: {}
\ No newline at end of file

src/Controller/SearchController.php

@@ -212,6 +212,7 @@ class SearchController extends ControllerBase {
         'library' => [
           'elasticsearch_search_api/ajaxify',
           'elasticsearch_search_api/blockui',
+          'elasticsearch_search_api/styles',
         ],
         'drupalSettings' => $drupalSettings,
       ],