adding styling to a Hubspot form in Enfold

I have a website built using Enfold, and have added a Hubspot form to it. The styling on the form comes from Hubspot. I am trying to add some additional CSS to allow me to add padding to the left and right of the form fields, but not sure how to do that. Can someone provide some guidance? Thank you.

The page I need help with: [log in to see the link]