Hi Kelsey,
How can I apply to only the footer use the following CSS? Where is css?
The CSS David provided only applies to footer widgets.
Are you asking how to add CSS? If so, you can pick between the choices here on how you add your CSS. -https://docs.generatepress.com/article/adding-css/
Here’s a demo video of adding CSS to the Customizer’s Additional CSS field.
https://share.getcloudapp.com/Kou4xRXq
A wise man once said:
"Have you cleared your cache?"