diff --git a/details.php b/details.php
index 1b02bca..85d1418 100644
--- a/details.php
+++ b/details.php
@@ -11,10 +11,8 @@ require_once('vendor/autoload.php');
 
 use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
-use PhpOffice\PhpSpreadsheet\Style\Border;
 use PhpOffice\PhpSpreadsheet\Style\Color;
 use PhpOffice\PhpSpreadsheet\Style\Fill;
-use PhpOffice\PhpSpreadsheet\Style\Alignment;
 use Soundasleep\Html2Text;
 
 admin_externalpage_setup('report_usergrades_details', '', null, '', array('capability' => 'report/usergrades:view'));