diff --git a/sass/ascribe_media_player.scss b/sass/ascribe_media_player.scss
index 250563f9..85e9e31c 100644
--- a/sass/ascribe_media_player.scss
+++ b/sass/ascribe_media_player.scss
@@ -3,8 +3,10 @@
 
     video,
     img {
+        max-width: 100%;
+        max-height: 640px;
         width: auto;
-        height: 100%;
+        height: auto;
         display: block;
         margin: 0 auto;
     }