A great way to edit the text in your policy documents would be to copy and paste the text into a page and edit the font using the rich text editor :). Then you can link the page to the footer naviagation using a new link list. Here is a Shopify Doc on setting this up:
Also, Brooklyn is a theme developed by us at Shopify in house :). You get 60 free minutes of design help with our theme support. If you wanted to edit the font through the CSS you can contact our theme support at: firstname.lastname@example.org to assist you :).