Asli: custom toggle for descriptions (php)

<?php
/**
 * Theme functions and definitions.
 * This child theme was generated by Merlin WP.
 *
 * @link https://developer.wordpress.org/themes/basics/theme-functions/
 */

/*
* If your child theme has more than one .css file (eg. ie.css, style.css, main.css) then
* you will have to make sure to maintain all of the parent theme dependencies.
*
* Make sure you're using the correct handle for loading the parent theme's styles.
* Failure to use the proper tag will result in a CSS file needlessly being loaded twice.
* This will usually not affect the site appearance, but it's inefficient and extends your page's loading time.
*
* @link https://codex.wordpress.org/Child_Themes
*/
add_action(  'wp_enqueue_scripts', 'asli_child_enqueue_styles', 99 );
function asli_child_enqueue_styles() {
  wp_enqueue_style( 'asli-style' , get_template_directory_uri() . '/style.css' );
  wp_enqueue_style( 'asli-child-style',
    get_stylesheet_directory_uri() . '/style.css',
    array( 'asli-style' ),
    wp_get_theme()->get('Version')
  );

  wp_enqueue_style( 'elementor-icons-fa-brands' ); // FontAwesome 5 Brands from Elementor
}

add_filter( 'arts/elementor/widgets/allowed_html_tags', 'custom_allow_more_html_tags' );
function custom_allow_more_html_tags( $_allowed_tags ) {
    $_allowed_tags = array_merge(
        $_allowed_tags,
        array(
            'ul'   => array(
                'class' => array(),
            ),
            'li'   => array(
                'class' => array(),
            ),
            'i'    => array(
                'class' => array(),
            ),
            'span' => array(
                'class' => array(),
            ),
        )
    );

    return $_allowed_tags;
}