how to remove header from registration page? [closed]

If you don’t mind editing your themes files, you can remove color.css from the registration page by editing the functions.php file and change line 127 from:

wp_enqueue_style( 'frisco-color-css');

to:

if ( ! is_page( 'register' ) ) wp_enqueue_style( 'frisco-color-css');

Otherwise you can include a function in a plugin or similar:

add_action( 'init', function() {
    if ( is_page( 'register' ) )
        wp_dequeue_style( 'frisco-color-css' );
});

You will need to change register to the name, slug or ID of your registration page.