Ninja Forms – Layout & Style changes nearly every aspect of your form’s appearance within your form builder. Therefore, you will find global form styling options under the Advanced menu of your form builder. Hence, each field can be styled individually only by opening that field’s settings window.
Ninja Forms – Layout & Styles Features
Easily add styles to form elements, labels and wrappers
Add default styles to elements
Style standard form components
Add styles to your form’s success and error messages
Export and import styles