diff --git a/app/assets/stylesheets/zzz.css.erb b/app/assets/stylesheets/zzz.css.erb
index dd6e4ce5c..ba5faa8f7 100644
--- a/app/assets/stylesheets/zzz.css.erb
+++ b/app/assets/stylesheets/zzz.css.erb
@@ -3430,6 +3430,7 @@ footer {
 }
 
 .textbox[contenteditable] {
+  display: block;
   white-space: pre;
   padding: 1px;
   outline-style: none;