diff --git a/viewer/css/pdf_viewer.css b/viewer/css/pdf_viewer.css
index 3abb7c8..9cfa58a 100644
--- a/viewer/css/pdf_viewer.css
+++ b/viewer/css/pdf_viewer.css
@@ -45,3 +45,12 @@ canvas {
 [data-main-rotation="270"] {
     transform: rotate(270deg);
 }
+
+.hiddenCanvasElement {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 0;
+    height: 0;
+    display: none;
+}