Structure
Top navigation
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Top navigation can have 1 or 2 levels.
Each level can include up to 7 items each.
1st level item labels may be wrap onto 2 lines.
2nd level item labels may only be presented in a single line.
A grey line separates 1st and 2nd level navigation.
A blue line is shown underneath the selected item(s).
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By default, the first item will be selected, unless otherwise configured by the user. Where there is more than 1 level, the first item of each level will be selected.
Internal logic
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Only one item can be selected from each level at a time.
When a top level item is selected, the 2nd level items should be updated appropriately.
Menu items should be in a logical order, with the most commonly used first.
The width of each item should be responsive to the item label, up to a maximum of x characters.
No horizontal scroll can be used for top navigation.
2nd level navigation should only be shown where relevant. Otherwise the area beneath the line will remain empty.
Interactions
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ADD IMAGES
The current selection is shown for the 1st and 2nd level navigation at all times, using a blue line underneath the item.
On selecting another item, if there are no sub-levels, the user will be redirected to the new page.
Selecting an item from the 1st level will only open the 2nd level menu, where one exists, without redirecting to a new page. Only after selecting a 2nd-level item will the user be redirected to a new page.