edit

front/static/document.js

@@ -192,7 +192,7 @@ var Document =
             }
             
             self.left = left * -1 + 10;
-            self.zoom = 0;
+            self.zoom = 2;
             if (self.left > 20) {
                 $(self.option.reader).css('margin-left', self.left);
                 self.zoom = 18;