diff --git a/themes/default/editor/_editor.scss b/themes/default/editor/_editor.scss
index f611389..4485d64 100644
--- a/themes/default/editor/_editor.scss
+++ b/themes/default/editor/_editor.scss
@@ -90,6 +90,14 @@
 
 }
 
+@media (max-width: 640px) {
+
+  .r6o-editor {
+    width:260px;
+  }
+
+}
+
 .r6o-editor.r6o-arrow-top .r6o-arrow {
   display:block;
 }