Customizing And Styling The Password Protected Form

Edit Your functions.php File

Open up your functions.php file and add this block of code:

function my_password_form() {
    global $post;
    $label = 'pwbox-' . ( empty($post->ID) ? rand() : $post->ID );
    $o = '<form action="' . esc_url(site_url('wp-login.php?action=postpass', 'login_post')) . '" method="post">';
    $o .= __("To view this protected post, enter the password below:");
    $o .=' <label for="' . $label . '">' . __("Password:") . ' </label>';
    $o .= '<input name="post_password" id="' . $label . '" type="password" size="20" maxlength="20" />';
    $o .= '<input type="submit" name="Submit" value="' . esc_attr__("Submit") . '" />';
    $o .= '</form>';
    return $o;
}

add_filter('the_password_form', 'my_password_form');

Remove protected from password protected title

function the_title_trim($title) {
    $title = attribute_escape($title);
    $findthese = array(
        '#Protected:#',
        '#Private:#'
    );
    $replacewith = array(
        '', // What to replace "Protected:" with
        '' // What to replace "Private:" with
    );
    $title = preg_replace($findthese, $replacewith, $title);
    return $title;
}

add_filter('the_title', 'the_title_trim');