diff --git a/static/editor.css b/static/editor.css
index 7f4122221..7e30600d8 100644
--- a/static/editor.css
+++ b/static/editor.css
@@ -39,6 +39,7 @@
   position: relative;
   display: table;
   width: 100%;
+  height: 100%;
 }
 
 .editor .line {