Since the update went well I proceeded with this.
The 'order' I could not get to work yet, will look into this later, but great to learn some new stuff
I understand what this does:
div:nth-child(2)
And how to apply it in the override.css (or in the custom section of Helix Ultimate).
Just it will override it for any page and any element, so I made a custom page class (news)
If I assign .news { background: yellow; } it will work on the specific page.
Now how do I use the div:nth-child(2) combined with the page class + the specific div I want to target (imagine the div is .article-header h2 a
If I know this, I can do the math, I am trying myself meanwhile!