Add the search icon from header into a full width submenu?

Hi Sebastian,

The solution provided by Mike is totally valid for your case, just put that php function call

<?php get_search_form();?>

wherever you need and style it properly.

Let us know if you have any more questions.

Best regards,
Victoria

Hi kieranvyas,

Can you give us a link to your website, we need to see your menu?

Best regards,
Victoria

Hi kieranvyas,

Here is a solution for you. Put this code to your functions.php

add_action('wp_footer', 'ava_new_custom_script');
function ava_new_custom_script(){
?>
<script type="text/javascript">
(function($) {
	function a() {
		$('#menu-blog-menu').append($('li#menu-item-search').clone());
	}

	$(window).load(function() {
		a();
	});
})(jQuery);
</script>
<?php
}

Let us know if this was helpful.
Best regards,
Victoria