Header
also called site header
The top section repeated across pages, holding identity and primary navigation.
The top bar of every page.
What It Is
You will find Header in the Website layer, alongside the rest of Structure. What it actually refers to is the top section repeated across pages, holding identity and primary navigation.
It is a label with a settled working definition, so the value is in using it the same way every time. Once it is defined that clearly, arguments about it usually stop.
How It's Used
Most of the time Header is used in site builds, page structure and the technical decisions underneath them. It normally appears alongside Primary Navigation, Sticky Header and Logo. The practical test is whether everyone in the room means the same thing by it.
Why It Matters
Ignoring Header rarely fails loudly — it fails slowly. When it is unclear, the site still launches — it just quietly underperforms. Clarity here removes a surprising amount of downstream argument.
Picture a word everyone in the room has agreed to use the same way. The top bar of every page.
Termshift™
How the meaning shifts depending on who is using it, and where.
Professionally, Header carries the narrow meaning: the top section repeated across pages, holding identity and primary navigation.
Explained to someone with no marketing background, Header is the top bar of every page.
The Bottom Line
If you only keep one thing about Header: the top bar of every page. Everything after that is detail.