Hide the Paid Memberships Pro Username field using CSS

hide-pmpro-username.css

/* 
*
* The following CSS code will hide the PMPro username field.
* Add this CSS to Simple Custom CSS and JS: https://wordpress.org/plugins/custom-css-js/
* Code Recipe intended to be used along with the following gist: https://github.com/strangerstudios/pmpro-snippets-library/blob/dev/checkout/name-email-only-checkout.php
*
*/

.pmpro_checkout-field-username { 
    display: none; 
    }