kidnec on "WP-LOGIN edit"

Hello to every body.
I have problém with editing my WP-LOGIN.php .... i use function.php in my template folder, so i want to have same design as web on this page. I try add this code to my functions.php.

function loginheader(){
get_header();
}
function loginfooter(){
get_footer();
}
add_action('login_head', 'loginheader');
add_action('login_footer', 'loginfooter');

Can you help me, why this login page look like this>
LINK

Thank you for help.
Havelka