How to change the type of search field on my website

I have a search box on my top menu bar, which I would like to remove. Can you tell me how to do this? My website is www.covitravel.com.

Then - I'd like to add the code below, from Google, to add a search field to my site. Can you help me understand where I should add this code below? I'm not sure how it will appear - or where, so am not sure if I want this on every page or just the home page. Can you help me? Thank you!!

<script>
(function() {
var cx = '006713786952641691993:r0tcljttgve';
var gcse = document.createElement('script');
gcse.type = 'text/javascript';
gcse.async = true;
gcse.src = (document.location.protocol == 'https:' ? 'https:' : 'http:') +
'//www.google.com/cse/cse.js?cx=' + cx;
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(gcse, s);
})();
</script>
<gcse:search></gcse:search>

 

Hello,

You can add this code and remove default code as shown below in screenshot.



Thanks & Regards
Yogesh Bhade

 

I do not have under APPEARANCE - THEME EDITOR (only EDITOR): This is how it appears. Where do I add the Google Code?

BlackBird Pro Responsive Theme: Stylesheet (style.css)​

​

 

Hello,

Use wp-editor to edit theme's file. Then you will see all files and folder of themes.
https://wordpress.org/plugins/wp-editor/

Thanks & Regards
Yogesh Bhade