Hi,
Thank you for providing us with a screenshot. The field input boxes can be targeted with CSS that target the following elements:
.nf-field-element input, .nf-field-element select, .nf-field-element textarea
Ninja Forms also has a Layout and Styles add-on which can help to style your forms.
One suggestion would be to activate “Opinionated Styles”. This setting can help to enforce certain styles if the site theme and other plugins are altering the look of the form. To enable this, navigate within your site to Ninja Forms > Settings > Advanced Settings. Here, you can change the “Opinionated Styles” setting to “Light” or “Dark” and save the settings.
Please give this a try and let us know if this works for you.
If the issue persists, can you reach out to our support team so that we can investigate the issue?
You can reach out to our team here: https://ninjaforms.com/contact
