Ok, but not without your permission 😉
So,
In functions.php :

/* Ajouter un bouton “Continuer mes achats” sur la page panier */

add_action( ‘woocommerce_after_cart_totals’, ‘wpm_continue_shopping_button’ );

function wpm_continue_shopping_button() {

// On récupère le lien de votre page boutique
$shop_page_url = get_permalink( woocommerce_get_page_id( ‘shop’ ) );

// On ajoute notre bouton
echo ”;
echo ‘ Continuer mes achats‘;
echo ”;
}

In Custon.css :
.wpm-continue-shopping {
margin-top: 20px;
}

.wpm-continue-shopping a {
width: 100%;
}