Add inline CSS to ticket selector using PHP. Useful for customizing the ticket selector and embedded ticket selector. Event Espresso 4.

ticket_selector_styles.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

add_action(
  'AHEE__ticket_selector_chart__template__before_ticket_selector', 
  'ee_add_ticket_selector_css'
);
function ee_add_ticket_selector_css() {
    $custom_css = 
    ".ticket-sales-expired, .ticket-pending {display:none;}";
    echo '<style>' . $custom_css . '</style>';
}