diff --git a/src/styles/cp.css b/src/styles/cp.css
index 67166f67..cc816244 100644
--- a/src/styles/cp.css
+++ b/src/styles/cp.css
@@ -128,7 +128,7 @@
   top: 0;
   left: 0;
   z-index: 1;
-  display: none;
+  visibility: hidden;
   -webkit-transform: translateX(100%) translate3d(100%, 0, 0);
   -moz-transform: translateX(100%) translate3d(100%, 0, 0);
   -ms-transform: translateX(100%) translate3d(100%, 0, 0);
@@ -138,7 +138,6 @@
   backface-visibility: hidden;
 }
 .h5p-course-presentation .h5p-slide.h5p-animate {
-  display: block;
   -webkit-transition: -webkit-transform 0.25s ease-in-out;
   -moz-transition: -moz-transform 0.25s ease-in-out;
   -ms-transition: -ms-transform 0.25s ease-in-out;
@@ -149,6 +148,7 @@
 }
 .h5p-course-presentation .h5p-current {
   display: block;
+  visibility: visible;
   -webkit-transform: translateX(0) translateZ(0);
   -moz-transform: translateX(0) translateZ(0);
   -ms-transform: translateX(0) translateZ(0);