How can I change the text style

Hello and thank you for posting here.

Rapid Contact Ex is designed to adjust to your template.
No text styles have been assigned to it, so that it uses your template's CSS.

However, some templates may not include all the necessary elements to style your fields.
If you want, you can send me a URL at mavrosxristoforos@gmail.com, so that we can help more.

Thanks again.