Keep fSelect facet always open

add_action( 'wp_footer', function() {
  ?>
    <style>

        .fs-label-wrap {
            display: none; /* hide the label and arrow button */
        }
        .fs-dropdown {
            position: initial; /* undo position: absolute */
            border-top: 1px solid #ddd; /* add missing border-top */
        }
        .fs-dropdown.fs-hidden {
            display: block; /* keep the options visible */
        }

    </style>
  <?php
}, 100 );