Hi Jean,
The checkout page layout is actually from WooCommerce plugin itself so the theme cannot control it.
1. This request is relatively simple so we can try this CSS:
.woocommerce-cart .woocommerce table.shop_table thead {
display: none;
}
.woocommerce-cart .woocommerce table.shop_table .product-price {
display: none;
}
Adding CSS: https://docs.generatepress.com/article/adding-css/
2. This request is more complicated and would require a custom solution so unfortunately we are unable to help with it here.
Please refer to this article:
https://generatepress.com/what-support-includes/
Thanks for your understanding ๐