diff --git a/cmsplugin_cascade/app_settings.py b/cmsplugin_cascade/app_settings.py
index 54464fca5..03b32b84b 100644
--- a/cmsplugin_cascade/app_settings.py
+++ b/cmsplugin_cascade/app_settings.py
@@ -121,6 +121,8 @@ def CMSPLUGIN_CASCADE(self):
         config.setdefault('allow_plugin_hiding', False)
 
         config.setdefault('cache_strides', True)
+        
+        config.setdefault('merge_extra_fields',True)
 
         config.setdefault('register_page_editor', True)
 
diff --git a/cmsplugin_cascade/extra_fields/mixins.py b/cmsplugin_cascade/extra_fields/mixins.py
index 973209d87..48b938f87 100644
--- a/cmsplugin_cascade/extra_fields/mixins.py
+++ b/cmsplugin_cascade/extra_fields/mixins.py
@@ -30,6 +30,21 @@ def get_form(self, request, obj=None, **kwargs):
         except ObjectDoesNotExist:
             extra_fields = app_settings.CMSPLUGIN_CASCADE['plugins_with_extra_fields'].get(clsname)
 
+        if hasattr(extra_fields, 'id') and app_settings.CMSPLUGIN_CASCADE['merge_extra_fields'] :
+            settings_extra_fields = app_settings.CMSPLUGIN_CASCADE['plugins_with_extra_fields']
+            if clsname in settings_extra_fields.keys():
+                for key_style, value_style in settings_extra_fields[clsname].inline_styles.items():
+                    extra_fields.inline_styles.update({key_style:extra_fields.inline_styles[key_style] + value_style})
+                for key_css_classes, value_css_classes in settings_extra_fields[clsname].css_classes.items():
+                    if value_css_classes == '':
+                        value_css_classes = extra_fields.css_classes[key_css_classes]
+                    elif type(value_css_classes) == list:
+                        list_extra_fields = extra_fields.css_classes[key_css_classes].replace(' ', '').split(",")
+                        list_css_classes = list(dict.fromkeys(list_extra_fields + value_css_classes))
+                        value_css_classes = ','.join(list_css_classes)
+                    extra_fields.css_classes.update({ key_css_classes:value_css_classes})
+                extra_fields.save()
+
         if isinstance(extra_fields, (PluginExtraFields, PluginExtraFieldsConfig)):
             form_fields = {}
 
diff --git a/docs/source/customize-styles.rst b/docs/source/customize-styles.rst
index 3495ea63e..2d01bcb71 100644
--- a/docs/source/customize-styles.rst
+++ b/docs/source/customize-styles.rst
@@ -110,6 +110,11 @@ styles shall be applied.
 .. |customize-styles| image:: /_static/customize-styles.png
 
 
+If the plugin has the default configuration, for example: sets the upper, lower, upper, and lower margins.
+The default settings above will be available in the plug-in editor because CMSPLUGIN_CASCADE variable.
+**merge_extra_fields**: True are set in defaults.
+
+
 Allow ID
 --------
 
diff --git a/tests/requirements.txt b/tests/requirements.txt
index 0504e95cd..8bec45c9a 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -7,4 +7,4 @@ pytest-django
 tox
 django-reversion
 factory-boy
-pytest-factoryboy
+pytest-factoryboy
\ No newline at end of file
diff --git a/tox.ini b/tox.ini
index f88d5e6b5..6f51740e1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,4 +30,4 @@ commands = rm -f .coverage
 deps =
     coverage==4.0.2
 skipsdist = true
-commands = coverage report
+commands = coverage report
\ No newline at end of file