Hi,

Please add following code to Child-Theme => Functions.php

function add_custom_script(){
?>
<script>
jQuery(window).load(function(){
jQuery(‘#avia-menu li.current_page_item a’).addClass(‘main-active-burger’);
});
</script>
<?php
}
add_action(‘wp_footer’, ‘add_custom_script’);
And
#top #wrap_all .av-burger-overlay .av-burger-overlay-scroll #av-burger-menu-ul li a.main-active-burger {
color: #000;
}

Best regards,
Ron