Added classes to primary buttons.

entity_embed.admin.inc

@@ -111,6 +111,9 @@ function entity_embed_dialog_form($form, &$form_state, $filter_format, $embed_bu
         '#type' => 'actions',
       );
       $form['actions']['save_modal'] = array(
+        '#attributes' => array(
+          'class' => array('button--primary'),
+        ),
         '#type' => 'submit',
         '#value' => t('Next'),
         // No regular submit-handler. This form only works via JavaScript.
@@ -240,6 +243,9 @@ function entity_embed_dialog_form($form, &$form_state, $filter_format, $embed_bu
         ),
       );
       $form['actions']['save_modal'] = array(
+        '#attributes' => array(
+          'class' => array('button--primary'),
+        ),
         '#type' => 'submit',
         '#value' => t('Embed'),
         // No regular submit-handler. This form only works via JavaScript.