Apply CSS to only one form

Replies: 2

Hi! I found this topic with a solution to customize a button with an image
https://wordpress.org/support/topic/image-for-submit-button/

However, this applies the change to all buttons I believe? How can I make it apply to ONE specific form?

Also, how could I add a Font Awesome arrow icon in front of the SEND text (instead of using a background image. Is that possible?