Barra de navegação
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
Basics
Here’s what you need to know before getting started with the navbar:
- Navbars require a wrapping
.navbar
and a color scheme class (either.navbar-default
or.navbar-inverse
). - Navbars and their contents are fluid by default. Use optional containers to limit their horizontal width.
- Use
.pull-left
and.pull-right
to quickly align sub-components. - Ensure accessibility by using a
<nav>
element or, if using a more generic element such as a<div>
, add arole="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:
<nav class="navbar navbar-light bg-faded">
<a class="navbar-brand" href="#">Navbar</a>
<ul class="nav navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
</ul>
<form class="form-inline navbar-form pull-right">
<input class="form-control" type="text" placeholder="Search">
<button class="btn btn-success-outline" type="submit">Search</button>
</form>
</nav>
Color schemes
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.
Here are some examples to show what we mean.
<nav class="navbar navbar-dark bg-inverse">
<a class="navbar-brand" href="#">Navbar</a>
<ul class="nav navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
</ul>
<form class="form-inline navbar-form pull-right">
<input class="form-control" type="text" placeholder="Search">
<button class="btn btn-info-outline" type="submit">Search</button>
</form>
</nav>
<nav class="navbar navbar-dark bg-primary">
<a class="navbar-brand" href="#">Navbar</a>
<ul class="nav navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
</ul>
<form class="form-inline navbar-form pull-right">
<input class="form-control" type="text" placeholder="Search">
<button class="btn btn-secondary-outline" type="submit">Search</button>
</form>
</nav>
<nav class="navbar navbar-light" style="background-color: #e3f2fd;">
<a class="navbar-brand" href="#">Navbar</a>
<ul class="nav navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
</ul>
<form class="form-inline navbar-form pull-right">
<input class="form-control" type="text" placeholder="Search">
<button class="btn btn-primary-outline" type="submit">Search</button>
</form>
</nav>
Containers
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.
<div class="container">
<nav class="navbar navbar-light bg-faded">
<a class="navbar-brand" href="#">Navbar</a>
</nav>
</div>
<nav class="navbar navbar-light bg-faded">
<div class="container">
<a class="navbar-brand" href="#">Navbar</a>
</div>
</nav>
Placement
Navbars can be statically placed (their default behavior), static without rounded corners, or fixed to the top or bottom of the viewport.
<nav class="navbar navbar-full navbar-light bg-faded">
<a class="navbar-brand" href="#">Full width</a>
</nav>
<nav class="navbar navbar-fixed-top navbar-light bg-faded">
<a class="navbar-brand" href="#">Fixed top</a>
</nav>
<nav class="navbar navbar-fixed-bottom navbar-light bg-faded">
<a class="navbar-brand" href="#">Fixed bottom</a>
</nav>
Collapsible content
Our collapse plugin allows you to use a <button>
or <a>
to toggle hidden content.
<div class="collapse" id="exCollapsingNavbar">
<div class="bg-inverse p-a">
<h4>Collapsed content</h4>
<span class="text-muted">Toggleable via the navbar brand.</span>
</div>
</div>
<nav class="navbar navbar-light bg-faded">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#exCollapsingNavbar">
☰
</button>
</nav>
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.
<nav class="navbar navbar-light bg-faded">
<button class="navbar-toggler hidden-sm-up" type="button" data-toggle="collapse" data-target="#exCollapsingNavbar2">
☰
</button>
<div class="collapse navbar-toggleable-xs" id="exCollapsingNavbar2">
<a class="navbar-brand" href="#">Responsive navbar</a>
<ul class="nav navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
</ul>
</div>
</nav>