Login page logo

Thanks, i was able to modify with this code in function.php. But i was wondering, if the theme get update, will it replace the function.php file?

/* Replace wp-login logo */
function login_page_logo(){
$site_url = home_url(); // URL of site
echo ‘<style>.login h1 a {
background-repeat: no-repeat;
background-image: url( ‘ . $site_url . ‘/wp-content/uploads/2024/01/U-NEXT-logo-noir-transparent-300×137.png );
background-position: center center;
background-size: contain !important;
width: 100% !important;
}
</style>’;
}
add_action(‘login_head’, ‘login_page_logo’);

/* Replace wp-logo link */
function login_page_URL( $url ){
$url = home_url(‘/home’);
return $url;
}
add_filter(‘login_headerurl’, ‘login_page_URL’);