The navbar is a simple wrapper for positioning branding, navigation, and other elements into a concise navigation header. It's easily extensible and, with the help of our collapse plugin, it can easily integrate offscreen content.
## Contents
* Will be replaced with the ToC, excluding the "Contents" header
{:toc}
## Basics
Here's what you need to know before getting started with the navbar:
- Navbars require a wrapping `.navbar` and a [color scheme](#color-schemes).
- Navbars and their contents are fluid by default. Use [optional containers](#containers) to limit their horizontal width.
- Ensure accessibility by using a `<nav>` element or, if using a more generic element such as a `<div>`, add a `role="navigation"` to every navbar to explicitly identify it as a landmark region for users of assistive technologies.
## Supported content
Navbars come with built-in support for a handful of sub-components. Mix and match from the following as you need:
-`.navbar-brand` for your company, product, or project name
-`.navbar-nav` for a full-height and lightweight navigation (including support for dropdowns)
-`.navbar-form` for vertically centering default-sized inputs and buttons.
-`.navbar-toggler` for use with our collapse plugin and other navigation toggling behaviors.
Here's an example of all the sub-components included in a default, light navbar:
Theming the navbar has never been easier thanks to the combination of a simple link color modifier class and `background-color` utilities. Put another way, you specify light or dark and apply a background color.
Although it's not required, you can wrap a navbar in a `.container` to center it on a page or add one within to only center the contents of the navbar.
{% example html %}
<divclass="container">
<navclass="navbar navbar-light bg-faded">
<aclass="navbar-brand"href="#">Navbar</a>
</nav>
</div>
{% endexample %}
{% example html %}
<navclass="navbar navbar-light bg-faded">
<divclass="container">
<aclass="navbar-brand"href="#">Navbar</a>
</div>
</nav>
{% endexample %}
## Placement
Navbars can be statically placed (their default behavior), static without rounded corners, or fixed to the top or bottom of the viewport.
For more complex navbar patterns, like those used in Bootstrap v3, use the `.navbar-toggleable-*` classes in conjunction with the `.navbar-toggler`. These classes override our responsive utilities to show navigation only when content is meant to be shown.
