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Bootstrap 4: Navs in Flex


I mentioned that flex box allows items to move inside a container. In the last post, I use buttons as an example to show how do those buttons move in the flex box. Today, I learned navs can also move in a flex box.

I would love to share my study note here.

Firstly, I copy the Bootstrap 4 starter template on the editor, and also put the base nav code in the body.


In order to show how navs move in the flex, I add a border outside the navs. The result shows a base nav bar inside a box.

Move in Row


Then, I want to add some space between each nav items, so I set "justify-content-around" value in the <ul>.


The result:
You can also move the items to the right (justify-content-end) or to the center (justify-content-center).

Move Vertically

If I want to show my nav bar vertically, I can just simple set "flex-column" value.


The result:

 Responsive Nav

If I want the nav bar change from the horizontal to vertical as the page changes to a smaller size, I can add "flex-sm-row align-items-center" next to the "flex-column" value.


The result:


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