I need to remove this html line for w3c validator

Hi there,

that is not part of theme. I would expect it has been added Cookie law plugin as it sits between the googleoff and googleon meta tags. You would need to speak to the plugin developer.

Hello, thanks for your quick reply.
My mistake the line is: 775

<style type="text/css" media="screen"></style>

Thanks.

Thats not related to the theme either. Apart from it NOT containing styles i cannot see as an Error in W3C validator.

Hello, i've disabled all plugins but the <style> is still there.
i really don't know how to hide it.
I've tried with javascript but the w3c still read it.
----
Do you have any advice?
Thanks.

Do you have any custom functions or any Hooks containing code ?

yes, i have a custom function.

-------------------------------

<?php
/**
* GeneratePress child theme functions and definitions.
*
* Add your custom PHP in this file.
* Only edit this file if you have direct access to it on your server (to fix errors if they happen).
*/

function generatepress_child_enqueue_scripts() {
if ( is_rtl() ) {
wp_enqueue_style( 'generatepress-rtl', trailingslashit( get_template_directory_uri() ) . 'rtl.css' );
}
}
add_action( 'wp_enqueue_scripts', 'generatepress_child_enqueue_scripts', 100 );

add_action('generate_inside_navigation', 'db_custom_navigation_search', 10);
add_action('generate_inside_mobile_header', 'db_custom_navigation_search', 10);
function db_custom_navigation_search() {
printf(
'<form method="get" class="search-form custom-nav-search" action="%1$s">
<input type="search" class="search-field" value="%2$s" name="s" title="%3$s" placeholder="%3$s">

</form>',
esc_url( home_url( '/' ) ),
esc_attr( get_search_query() ),
esc_attr_x( 'Search', 'label', 'generatepress' ),
generate_get_svg_icon( 'search' )
); echo '

';
}

/* FUNZIONE PER TOGLIERE IL CUSTOMIZE DEL TEMA */

add_action( 'after_setup_theme', 'tu_remove_dynamic_css' );
function tu_remove_dynamic_css() {
remove_action( 'wp_enqueue_scripts', 'generate_enqueue_dynamic_css', 50 );
}

/* TOGLI IL TYPE DA SCRIPT E STYLE */

add_action(
'after_setup_theme',
function() {
add_theme_support( 'html5', [ 'script', 'style' ] );
}
);

Hmmm - i can't see that would create the empty <style> tag - can you 'disable' the childthemes functions.php ( simply remove the code to somewhere safe ) to test.

hello, i have done it, but nothing changed.
I really don't know what to do..

Are you using any Hook Elements ?

https://docs.generatepress.com/article/hooks-element-overview/
Check in there to make sure there isn't any code.

If not then the only other way to remove it is to look for it in your database.

Or just ignore it - W3 is only warning you of the use of the styles attribute - not the empty content.