[Plugin: WooCommerce] Changing font fize & color in checkout

Hello all,

I was wondering how to change the font size and color of the text in the checkout section of WooCommerce (“Billing Details,” “Order Notes,” etc.).

I’m sorry to ask such an amateur question, but I’m very new to both WooCommerce and WordPress, so I’m not entirely sure how and where to make the changes.

Thank you so much in advance for any help!