WordPress login page tweaks

functions.php

<?php
/**
 * Filter the logo on the WordPress login page
 */
function iweb_login_logo(){
	echo '<style type="text/css">h1 a {background-image:url(' . get_stylesheet_directory_uri() . '/logo.png' . ') !important; background-position: center center !important; background-size: auto !important; width: 265px !important; height: 80px !important;}</style>';
}
add_filter( 'login_head', 'iweb_login_logo' );

/**
 * Filter the url of the logo on the WordPress login page
 */
function iweb_login_logo_url( $url ) {
    return home_url( '/' );
}
add_filter( 'login_headerurl', 'iweb_login_logo_url' );