change font in contact form message area

(working on a blank template created in a web design class)

Fine tuning the contact form for my site.
Using Simple Basic Contact Form, I’m trying to make the text inside the input boxes match. I want to change the text “Your Message” inside the Message box to match the font that reads “Your Name” and “Your Email” but i can’t find where to make that change.
Any thoughts?

https://gracechurchhouston.com/contact/