Add a button on right side of header

Hi, I am trying to add a button to the right side of my header, that will say “free trial”.

I added the code found in this post: https://kriesi.at/support/topic/adding-custom-button-on-top-right-hand-of-enfold-header

When I did this, the button appeared, but it bumped the header down and was on the top right of the page. here is a screenshot
I would like the button to be on the right side of the links and not on top of them