Site: http://www.brightman-gil.com/dev
The default on the template is that both top and header are in one container which is sticky. This is great for me.

Unfortunately, when I try to make the header (or both the header and top) sticky on the mobile, I lose the sticky attribute on the desktop top position.

I read through this thread https://www.inspiretheme.com/blog/freebies/42-fixed-sticky-header-atoms-for-gantry-5-freebies#comment-2692574100, and followed it by installing the Fixed Header Atom.

But when I put in the Atom's settings in the CSS Selector Field "#g-header" and in Mobile Field "Enabled", then on the desktop version of the site I lose the sticky attribute on the top position. I also tried to put in the CSS Selector Field "#g-header, #g-top", but that did not work.

Is there a way to have either just header or both header and top sticky on the mobile while still maintaining both header and top sticky on the desktop?

TIA!!!!
Lisa