Sticky top navigation bar

add this to theme option->custom css

#top-navigation:before,#top-navigation:after {display:none;}

Thank you so much for your quick answer but sadly it doesn’t work. ??

it work on my end tho, the shadow disappear once i added the code. try clearing your site cache etc..

recheck the css code
#top-navigation:before, #top-navigation:after { display:none; }

I don’t know what I am doing wrong, but the only thing I got is that the shadow disappear.
Probably I am not able to clear the cache appropriately.

yes, the code only make the shadow disappear.
you said that you already use plugin for sticky navigation.

the theme itself did not have sticky navigation.

Yes i’ve tried to use the plugin but it doesn’t run, so I deleted it.
I give up. No problem. Thank you for your kind attention.

actually you could, add this to wp-content/meso-custom-functions.php or your child theme functions.php

<?php
/*--------------------------------------------
Description: add mesocolumn sticky nav
---------------------------------------------*/
function meso_add_sticky_nav() {
if( !wp_is_mobile() ) {
if( is_user_logged_in() ) { $log = 'true'; } else { $log = 'false'; } ?>
<script type="text/javascript">
jQuery.noConflict();
var $st = jQuery;
var log = <?php echo "$log"; ?>;
$st(document).ready(function() {
// grab the initial top offset of the navigation
var sticky_navigation_offset_top = $st('#top-navigation').offset().top;
// our function that decides weather the navigation bar should have "fixed" css position or not.
var sticky_navigation = function(){
var scroll_top = $st(window).scrollTop();
        if (scroll_top > sticky_navigation_offset_top) {
        if( log == true ) {
        $st('#top-navigation').css({ 'z-index': '9999','position': 'fixed','top':30, 'left':0 });
        } else {
        $st('#top-navigation').css({ 'z-index': '9999','position': 'fixed','top':0, 'left':0 });
        }
        $st('#top-navigation').addClass('iegradient topping');

		} else {
		   $st('#top-navigation').css({ 'position': 'relative', 'top':0 });
           $st('#top-navigation').removeClass('topping');
		}
	};
	// run our function on load
	sticky_navigation();
	$st(window).scroll(function() {
		 sticky_navigation();
	});
	$st('a[href="#"]').click(function(event){
		event.preventDefault();
	});

});
</script>
<style>#top-navigation:before,#top-navigation:after{display:none;}</style>
<?php } }
add_action('wp_head','meso_add_sticky_nav',99);
?>

I thank you again, unfortunately I am pretty noob in code and site building and I can’t find the folder you say.
Thank you anyway I appreciate so much your help and your work, bye ??

check the faq.txt on how to create new file in wp-content/ name it meso-custom-functions.php.

or you could just paste it in functions.php without the <?php and closing ?>

tried the second one
tragedy

Parse error: syntax error, unexpected ‘}’ in /web/htdocs/www.fieralibroiglesias.it/home/wp-content/themes/mesocolumn/functions.php on line 470

seem fine to me with the same code.

menu isn’t responsive at all, after applying these changes in function.php