missing dot

assets/css/print.css

@@ -74,4 +74,4 @@
     }
 
     div.wrapper, div.sidebar, div.modal, div.modal-backdrop, div.lightbox, div.lightboxOverlay { display: none !important; }
-}
+}

src/Printer/PrintHTML.php

@@ -97,7 +97,7 @@ final class PrintHTML {
             $tmp_out .= $this->set_align($this->__atabel[$i][0], $this->__atabel[$i][1], "C", false, true, $this->__atabel[$i][4]);
         }
         $tmp_out .= "</tr>";
-        $out = "</thead>".$tmp_out."<tbody>";
+        $out .= "</thead>".$tmp_out."<tbody>";
 
         // content out
         for ($i=0; $i<count($this->__avalue); $i++) {