diff --git a/src/python-fastui/fastui/json_schema.py b/src/python-fastui/fastui/json_schema.py
index 49492796..8779421d 100644
--- a/src/python-fastui/fastui/json_schema.py
+++ b/src/python-fastui/fastui/json_schema.py
@@ -185,6 +185,7 @@ def json_schema_field_to_field(
             initial=schema.get('default'),
             description=schema.get('description'),
             mode=schema.get('mode', 'checkbox'),
+            class_name=schema.get('className'),
         )
     elif field := special_string_field(schema, name, title, required, False):
         return field
@@ -192,11 +193,13 @@ def json_schema_field_to_field(
         return FormFieldInput(
             name=name,
             title=title,
+            placeholder=schema.get('placeholder'),
             html_type=input_html_type(schema),
             required=required,
             initial=schema.get('default'),
             autocomplete=schema.get('autocomplete'),
             description=schema.get('description'),
+            class_name=schema.get('className'),
         )
 
 
@@ -246,6 +249,7 @@ def special_string_field(
                 multiple=multiple,
                 accept=schema.get('accept'),
                 description=schema.get('description'),
+                class_name=schema.get('className'),
             )
         elif schema.get('format') == 'textarea':
             return FormFieldTextarea(
@@ -258,6 +262,7 @@ def special_string_field(
                 initial=schema.get('initial'),
                 description=schema.get('description'),
                 autocomplete=schema.get('autocomplete'),
+                class_name=schema.get('className'),
             )
         elif enum := schema.get('enum'):
             enum_labels = schema.get('enum_labels', {})
@@ -271,6 +276,7 @@ def special_string_field(
                 initial=schema.get('default'),
                 description=schema.get('description'),
                 autocomplete=schema.get('autocomplete'),
+                class_name=schema.get('className'),
             )
         elif search_url := schema.get('search_url'):
             return FormFieldSelectSearch(
@@ -282,6 +288,7 @@ def special_string_field(
                 multiple=multiple,
                 initial=schema.get('initial'),
                 description=schema.get('description'),
+                class_name=schema.get('className'),
             )