The WooCommerce Product Page Builder allows you to customize your cart page easily. You can create different cart layouts from the number of options available.
Since the cart page is only one on the site so unlike the product templates, we have created a custom element for the cart page that handles you cart page design and the layout. Here's how you can customize the cart page -
Edit you cart page
Remove the existing [woocommerce_cart] shortcode and switch to Fusion Builder
Add a container and then search for the element "Woo Cart Template" and insert it
Click on the Save button in the popup and update the cart page.
This is just as simple as above steps. With just replacing the cart shortcode with the new cart element, you can convert your cart page to something like this -