add_action('wp_head', function () {
  if (is_page(11)) {
    echo '<style>body.page-id-11 header.elementor-element{display:none!important}</style>';
  }
});add_action('wp_head', function () {
  if (is_page(11)) {
    echo '<style>body.page-id-11 main header.elementor-element{display:none!important}</style>';
  }
});