Hi @blake232,
Please try the following custom CSS:
div.wpforms-container-full .wpforms-form input[type=date], div.wpforms-container-full .wpforms-form input[type=datetime], div.wpforms-container-full .wpforms-form input[type=datetime-local], div.wpforms-container-full .wpforms-form input[type=email], div.wpforms-container-full .wpforms-form input[type=month], div.wpforms-container-full .wpforms-form input[type=number], div.wpforms-container-full .wpforms-form input[type=password], div.wpforms-container-full .wpforms-form input[type=range], div.wpforms-container-full .wpforms-form input[type=search], div.wpforms-container-full .wpforms-form input[type=tel], div.wpforms-container-full .wpforms-form input[type=text], div.wpforms-container-full .wpforms-form input[type=time], div.wpforms-container-full .wpforms-form input[type=url], div.wpforms-container-full .wpforms-form input[type=week], div.wpforms-container-full .wpforms-form select, div.wpforms-container-full .wpforms-form textarea {
border-radius: 25px !important;
}
Feel free to adjust the border-radius value in that snippet according to your preference.
And in case it helps, here’s a tutorial from WPBeginner on how to add custom CSS like this to your site.
Hope this helps!