Font descrepancy on contact form

I have installed a theme and used this plugin as my contact form. Everything is working beautifully except for the CSS on the contact form.

I managed to find a piece of code that I entered at the end of the plugin’s style sheet.

div.cscfForm label {
	font-family: "Times New Roman", Times, serif;
	font-style:italic;
}

It affected the appearance of most of the contact form which is what I wanted. But when you use the contact form, the message box doesn’t seem to pick up this code. Also the auto reply is after you send the message is also still in the ‘old’ CSS.

Where do I need to change the CSS? I can’t seem to locate the file in which I am suppose to do this.

The link to my website’s contact page: https://biancabenson.com/contact/

Send me a message via the contact form and you will see that the font/css of the message box and automated reply is different than to the rest of the website.

Any suggestions are welcome. Thx!

https://www.ads-software.com/plugins/clean-and-simple-contact-form-by-meg-nicholas/