diff --git a/css/entity_browser.entity_browser.css b/css/entity_browser.entity_browser.css
new file mode 100644
index 0000000..6c4719d
--- /dev/null
+++ b/css/entity_browser.entity_browser.css
@@ -0,0 +1,8 @@
+/**
+ * @file
+ * Styles for the overall entity browser.
+ */
+
+.layout-container {
+  margin: 0;
+}
diff --git a/entity_browser.libraries.yml b/entity_browser.libraries.yml
index d267052..0052ba2 100644
--- a/entity_browser.libraries.yml
+++ b/entity_browser.libraries.yml
@@ -6,6 +6,12 @@ common:
     - core/underscore
     - core/drupal.dialog.ajax
 
+entity_browser:
+  version: VERSION
+  css:
+    theme:
+      css/entity_browser.entity_browser.css: {}
+
 entity_list:
   version: VERSION
   css:
diff --git a/src/Form/EntityBrowserForm.php b/src/Form/EntityBrowserForm.php
index 8cad31b..ac290da 100644
--- a/src/Form/EntityBrowserForm.php
+++ b/src/Form/EntityBrowserForm.php
@@ -134,6 +134,8 @@ class EntityBrowserForm extends FormBase implements EntityBrowserFormInterface {
       $this->entity_browser->getDisplay()->addAjax($form);
     }
 
+    $form['#attached']['library'][] = 'entity_browser/entity_browser';
+
     return $form;
   }