Flexbox Horizontal Menu

Menu Item 0

Sub Item Menu 0

Sub Item Menu 1 - With long label

Sub Item Menu 2 - Withtooolongwordslikeingerman

Menu Item 1

Sub Item Menu 0
Sub Item Menu 1 - With long label
Sub Item Menu 2 - Withtooolongwordslikeingerman

Menu Item 2

Sub Item Menu 0
Sub Item Menu 1
Sub Item Menu 2

Menu Item 3

Sub Item Menu 0
Sub Item Menu 1
Sub Item Menu 2