Escort Wide: Keep fixed-menu as main navigation

[Michael Cornez]

Hello

I am rebuilding a new version of my website and am using the Escort Wide template.
When scrolling down a page, I got the fixed-menu version of the header appearing. i would like to only use this version and not the two-line header appearing when I am at the top of a page.

I add fixed-menu in the header class but it doesn't work.

Can anyone help me?
Test Website: escortae.xxx/v2

Thank you

Mick