.wc-block-components-button.wp-element-button.wc-block-components-checkout-place-order-button {
    background-color: var(--blue-colour);
    color: white;
    border-radius: 10px;
}
.wc-block-components-totals-item.wc-block-components-totals-fees {
    color: red;
    font-weight: 600;
}
.wc-block-components-product-details__multipack-discount {
    color: red;
    font-weight: 600;
}