diff --git a/styles/h5p.css b/styles/h5p.css
index d50fa3e9..d5a15910 100644
--- a/styles/h5p.css
+++ b/styles/h5p.css
@@ -27,7 +27,7 @@
 html.h5p-iframe, html.h5p-iframe > body {
   font-family: Sans-Serif; /* Use the browser's default sans-serif font. (Since Heletica doesn't look nice on Windows, and Arial on OS X.) */
   width: 100%;
-  height: 100%;
+  min-height: 100%;
   margin: 0;
   padding: 0;
 }