diff --git a/asset/css/print.css b/asset/css/print.css
new file mode 100644
index 0000000..adc68fa
--- /dev/null
+++ b/asset/css/print.css
@@ -0,0 +1,3 @@
+h1 {
+  color: red;
+}
diff --git a/src/Site/BlockLayout/TechDocument.php b/src/Site/BlockLayout/TechDocument.php
index eee6285..b249bf8 100644
--- a/src/Site/BlockLayout/TechDocument.php
+++ b/src/Site/BlockLayout/TechDocument.php
@@ -102,7 +102,9 @@ class TechDocument extends AbstractBlockLayout
                 .'</td>
             </tr>
         </table>');
-      $mpdf->WriteHTML($html);
+      $stylesheet = file_get_contents('./modules/TechDocument/asset/css/print.css');
+      $mpdf->WriteHTML($stylesheet, 1);
+      $mpdf->WriteHTML($html, 2);
       $mpdf->Output($this->storage_dir.'/docs/'.$document_name, \Mpdf\Output\Destination::FILE);
   }