Custom login page for wordpress wp-admin

/* ---------------------- Custom Login ------------------------------------------------------------- */
body.login { background-color: #e0e4e9; color: #314a63; }
body.login div#login h1 a { background-image: url('http://dev.drupalpartners.com/wp-content/themes/drupalpartners/images/bnr-centr-img.png'); }
body.login div#login form#loginform p.submit input#wp-submit {
background-color: #314a63;
background-image: linear-gradient(to bottom, #314a63, #314a63);
border-bottom-color: #314a63;
border-left-color: #314a63;
border-right-color: #314a63;
border-top-color: #314a63;
color:#fff;
}


function.php :

function theme_customize_login() {
?>
    <link rel="stylesheet" href="<?php echo get_bloginfo( 'stylesheet_directory' ) . '/style.css'; ?>" type="text/css" media="all" />
<?php
}
add_action( 'login_enqueue_scripts', 'theme_customize_login' );