How can I Combine 2 Functions?

Hello,

I am trying to combine 2 functions. The first one is for applying css or hiding specific elements by role

<?php

add_action( 'wp_head', 'get_user_role' );

function get_user_role() {

global $current_user;

$user_roles = $current_user->roles;

$user_role = array_shift($user_roles);

if ($user_role == "customer"){

?>

<style type="text/css">



#wpadminbar{display:none!important;}



</style>

<?php

}elseif ($user_role == "subscriber") {

?>

<style type="text/css">

#mega-menu- {

display:none!important;

}

</style>

<?php



};

};

The second one is for applying css backend at wordpress dashboard

add_action('admin_head', 'my_custom_fonts');



function my_custom_fonts() {

echo '<style>



#adminmenu{display:none!important;}



.widefat tfoot td.check-column, .widefat thead{color:red!important;}



</style>';

}

How could I combine these 2 functions and hide specific elements in wordpress dashboard by role?