Hi,
I’ll mark the topic as no-bug since I don’t think it’s a bug, but more like an improvement suggestion, to allow adding custom classes and styling easily to the header itself.
The thing is, what you are styling is the inner part of the header, so whatever z-index you set there, it will be only applied to the inner sections, not to the header itself.
Something like the code below should work if you add it in the Custom CSS field in Bricks settings.
header{
z-index: 1;
}
But, I can not log this as a bug, since it works as intended, there is just no layout option for this.
Matej