diff --git a/lib.php b/lib.php
index d913e59..7156dee 100644
--- a/lib.php
+++ b/lib.php
@@ -877,13 +877,13 @@ function customcert_generate_report_file($customcert, $users, $type) {
 
     $filename = clean_filename($COURSE->shortname . ' ' . rtrim($customcert->name, '.') . '.' . $type);
 
-    // Send HTTP headers
+    // Send HTTP headers.
     $workbook->send($filename);
 
-    // Creating the first worksheet
+    // Creating the first worksheet.
     $myxls = $workbook->add_worksheet(get_string('report', 'customcert'));
 
-    // Print names of all the fields
+    // Print names of all the fields.
     $myxls->write_string(0, 0, get_string('lastname'));
     $myxls->write_string(0, 1, get_string('firstname'));
     $myxls->write_string(0, 2, get_string('idnumber'));
@@ -891,7 +891,7 @@ function customcert_generate_report_file($customcert, $users, $type) {
     $myxls->write_string(0, 4, get_string('receiveddate', 'customcert'));
     $myxls->write_string(0, 5, get_string('code', 'customcert'));
 
-    // Generate the data for the body of the spreadsheet
+    // Generate the data for the body of the spreadsheet.
     $i = 0;
     $row = 1;
     if ($users) {
@@ -912,6 +912,6 @@ function customcert_generate_report_file($customcert, $users, $type) {
             $row++;
         }
     }
-    // Close the workbook
+    // Close the workbook.
     $workbook->close();
 }
diff --git a/report.php b/report.php
index d9c6a4c..844e713 100644
--- a/report.php
+++ b/report.php
@@ -16,7 +16,7 @@
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
- * Handles viewing a customcert.
+ * Handles viewing a report that shows who has received a customcert.
  *
  * @package    mod_customcert
  * @copyright  Mark Nelson <markn@moodle.com>
@@ -62,10 +62,10 @@ if ($download) {
 
 // Create the table for the users.
 $table = new html_table();
-$table->width = '95%';
-$table->tablealign = 'center';
+$table->attributes['class'] = 'generaltable centre';
+$table->attributes['style'] = 'width: 95%;';
 $table->head  = array(get_string('awardedto', 'customcert'), get_string('receiveddate', 'customcert'), get_string('code', 'customcert'));
-$table->align = array('left', 'left', 'center', 'center');
+$table->align = array('left', 'left', 'center');
 foreach ($users as $user) {
     $name = $OUTPUT->user_picture($user) . fullname($user);
     $date = userdate($user->timecreated);
@@ -75,7 +75,7 @@ foreach ($users as $user) {
 
 // Create table to store buttons.
 $tablebutton = new html_table();
-$tablebutton->attributes['class'] = 'downloadreport';
+$tablebutton->attributes['class'] = 'centre';
 $btndownloadods = $OUTPUT->single_button(new moodle_url('report.php', array('id' => $cm->id, 'download' => 'ods')), get_string("downloadods"));
 $btndownloadxls = $OUTPUT->single_button(new moodle_url('report.php', array('id' => $cm->id, 'download' => 'xls')), get_string("downloadexcel"));
 $tablebutton->data[] = array($btndownloadods, $btndownloadxls);
diff --git a/styles.css b/styles.css
index ea1a624..e054eb3 100644
--- a/styles.css
+++ b/styles.css
@@ -1,3 +1,8 @@
 #page-mod-customcert-edit .deletebutton {
     text-align:right;
 }
+
+#page-mod-customcert-report .centre {
+    margin-left: auto;
+    margin-right: auto;
+}