I am starting to design a website using Helix Ultimate (v2.1.1) as a template and I want to customize the header.
I have already read the documentation and in principle I have clear steps to distribute the elements according to my needs, but in terms of appearance I would like it to be as in the Luxyort template, which initially the header has transparency and then scrolling down activates the sticky header changing to a darker background.
In addition to this, I would like the sticky header logo size to be 50% smaller.
From what I have been researching, to achieve this should I use custom CSS code?
If so, could you show me an example of how to do it? Ideally I would like to see an example of Luxyort's own styling.
Thank you very much.