edit

front/static/document.js

@@ -195,7 +195,7 @@ var Document =
             self.zoom = 0;
             if (self.left) {
                 $(self.option.reader).css('margin-left', self.left);
-                self.zoom = 20;
+                self.zoom = 18;
             }
 
             if (w - self.width > 10) {