Footer form - change colour of (required)

Hello, the default font colour on the (required) text doesn't padd the contrast check and I would like to change to white. What is the code for this please as I can't seem to target it.

Also the first name and last name text size is too small, how to increase please.

Thanks!

Victoria

Provide your website url.

https://www.116pallmall.com/contact/#enquiry-form

Thank you! That worked