diff --git a/styles/h5p.css b/styles/h5p.css
index c5e73bf..ea999df 100644
--- a/styles/h5p.css
+++ b/styles/h5p.css
@@ -34,7 +34,7 @@ html.h5p-iframe .h5p-content {
   font-size: 16px;
   line-height: 1.5em;
   width: 100%;
-  height: 100%;
+  height: auto;
 }
 .h5p-content.h5p-no-frame,
 .h5p-fullscreen .h5p-content,