diff -r 07239de796bb -r e756a8c72c3d cms/drupal/themes/garland/theme-settings.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/themes/garland/theme-settings.php	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * @file
+ * Theme setting callbacks for the garland theme.
+ */
+
+/**
+ * Implements hook_form_FORM_ID_alter().
+ *
+ * @param $form
+ *   The form.
+ * @param $form_state
+ *   The form state.
+ */
+function garland_form_system_theme_settings_alter(&$form, &$form_state) {
+
+  $form['garland_width'] = array(
+    '#type' => 'radios',
+    '#title' => t('Content width'),
+    '#options' => array(
+      'fluid' => t('Fluid width'),
+      'fixed' => t('Fixed width'),
+    ),
+    '#default_value' => theme_get_setting('garland_width'),
+    '#description' => t('Specify whether the content will wrap to a fixed width or will fluidly expand to the width of the browser window.'),
+    // Place this above the color scheme options.
+    '#weight' => -2,
+  );
+}