CSS code for sticky navigation on Brine Layout Pages

Site URL: https://salamander-cowbell-y9xl.squarespace.com/

Hey all,

I am using the BRINE template and have managed to make my navigation bar stick to the top of the page on the index page when scrolling using the following code;

.Header {
 position: fixed;
 width: 100%;
 z-index: 2000;
 }

However on the regular pages such as About and Contact the navigation bar completely disappears leaving only the logo on the header bottom. (please see the attached files)

I should note I have placed the Primary navigation on the Header-Top and the logo on the Header-Bottom as I want the nav bar to have a separate background colour from the logo.

My website: https://salamander-cowbell-y9xl.squarespace.com/

Password: Adam2020

Thanks in advanced!

Adam

Legend! This works a treat, thanks for your time and help with this issue!