The video tutorial explains how to implement logic in an HTML template to display a message when a shopping cart is empty. It covers using if statements and for loops to check for cart items and display the subtotal or an empty cart message accordingly. The tutorial guides through the process of adding conditional logic to the template and finalizing the implementation to ensure the cart functionality works as intended.

What message is displayed when the cart is empty, and how is it implemented?

How does the system respond when items are added to the cart?