add new class to wp nav menu

add new class to wp nav menu

<?php
                        echo str_replace( '<li class="', '<li class="myclass ',
                            wp_nav_menu(
                                array(
                                    'theme_location'    => 'menu-1',
                                    'container'         => 'ul',
                                    'menu_class'      => 'nav nav-pills justify-content-center d-flex align-items-center justify-content-between',

                                    'echo'              => false
                                )
                            )
                        );
                    ?>