Run custom script-css based on user role through wp_head hook

/** Run custom inline CSS based on user id **/
add_action( 'wp_head', 'run_my_custom_css');
function run_my_custom_css() {
global $current_user;
$user_id = get_current_user_id();
if( is_user_logged_in() && $user_id == '30'){
    ?>
    <style>
        .read-more {display: none;}
    </style>
    <?php
    }
}


/** Run custom inline JS based on user id **/
add_action( 'wp_head', 'run_my_custom_javascript');
function run_my_custom_javascript() {
global $current_user;
$user_id = get_current_user_id();
if( is_user_logged_in() && $user_id == '1'){
    ?>
        <script>
            alert('This alert will only show for the admin (user_id: 1)');
        </script>
    <?php

    }


}