diff --git a/js/h5p.js b/js/h5p.js
index 7f63c1f..f7a3937 100644
--- a/js/h5p.js
+++ b/js/h5p.js
@@ -955,6 +955,7 @@ H5P.Dialog = function (name, title, content, $element) {
       $dialog.addClass('h5p-open'); // Fade in
       // Triggering an event, in case something has to be done after dialog has been opened.
       H5P.jQuery(self).trigger('dialog-opened', [$dialog]);
+      H5P.instances[0].trigger('resize');
     }, 1);
   };
 
@@ -965,6 +966,7 @@ H5P.Dialog = function (name, title, content, $element) {
     $dialog.removeClass('h5p-open'); // Fade out
     setTimeout(function () {
       $dialog.remove();
+      H5P.instances[0].trigger('resize');
     }, 200);
   };
 };
diff --git a/styles/h5p.css b/styles/h5p.css
index e3ece5c..786d72f 100644
--- a/styles/h5p.css
+++ b/styles/h5p.css
@@ -272,6 +272,7 @@ div.h5p-fullscreen {
   transition: opacity 0.2s;
   background:#000;
   background:rgba(0,0,0,0.75);
+  min-height: 300px;
 }
 .h5p-popup-dialog.h5p-open {
   opacity: 1;