diff --git a/aqt/editor.py b/aqt/editor.py
index 4793329a5..316800029 100644
--- a/aqt/editor.py
+++ b/aqt/editor.py
@@ -31,7 +31,7 @@ _html = """
 }
 /* prevent floated images from being displayed outside field */
 .field:after {
-    content: ".";
+    content: "";
     display: block;
     height: 0;
     clear: both;