Change Admin Login Logo (WordPress)

functions.php

// Admin Logo
function custom_login_logo() {
    echo '<style type="text/css">
        h1 a { 
          background-image:url(/wp-content/uploads/**/logo.svg) !important;
          width: ** !important;
          background-size: 100% !important;
          height: ** !important;
          margin-bottom: 2em !important;
        }
    </style>';
}
add_action('login_head', 'custom_login_logo');

// Change Logo Link
add_filter( 'login_headerurl', 'custom_loginlogo_url' );
function custom_loginlogo_url($url) {
    return $admin_url;
}

// Change Logo Title
function my_login_logo_url_title() {
    return 'Website Name';
}
add_filter( 'login_headertitle', 'my_login_logo_url_title' );