diff --git a/common/lib/xmodule/xmodule/css/html/display.scss b/common/lib/xmodule/xmodule/css/html/display.scss
index 9c929c2113..c560027b12 100644
--- a/common/lib/xmodule/xmodule/css/html/display.scss
+++ b/common/lib/xmodule/xmodule/css/html/display.scss
@@ -266,8 +266,8 @@ th {
       .image-content .image-wrapper {
         top: 0 !important;
         left: 0 !important;
-        width: auto !important;
-        height: auto !important;
+        width: 100% !important;
+        height: 100% !important;
         
         img {
           top: 0 !important;