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Components

Over a dozen reusable components built to provide buttons, dropdowns, input groups, navigation, alerts, and much more.

Navbar

The navbar is a wrapper that positions branding, navigation, and other elements into a concise header. It’s easily extensible and thanks to our Collapse plugin, it can easily integrate responsive behaviors.

Contents

Basics

Here’s what you need to know before getting started with the navbar:

  • Navbars require a wrapping .navbar and a color scheme.
  • Navbars and their contents are fluid by default. Use optional containers to limit their horizontal width.
  • Use .float-*-left and .float-*-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 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 needed:

  • .navbar-brand for your company, product, or project name
  • .navbar-nav for a full-height and lightweight navigation (including support for dropdowns)
  • .navbar-toggler for use with our collapse plugin and other navigation toggling behaviors.
  • Inline forms with .float- utilities for form controls and components.
  • .navbar-text for adding vertically centered strings of text.

Here’s an example of all the sub-components included in a default, non-responsive light themed navbar. See the responsive examples for collapsing nav support.

<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="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item dropdown">
      <a class="nav-link dropdown-toggle" href="http://example.com" id="supportedContentDropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
      <div class="dropdown-menu" aria-labelledby="supportedContentDropdown">
        <a class="dropdown-item" href="#">Action</a>
        <a class="dropdown-item" href="#">Another action</a>
        <a class="dropdown-item" href="#">Something else here</a>
      </div>
    </li>
  </ul>
  <form class="form-inline float-xs-right">
    <input class="form-control" type="text" placeholder="Search">
    <button class="btn btn-outline-success" type="submit">Search</button>
  </form>
</nav>

Brand

The .navbar-brand can be applied to most elements, but an anchor works best as some elements might require utility classes or custom styles.

<!-- As a link -->
<nav class="navbar navbar-light bg-faded">
  <a class="navbar-brand" href="#">Navbar</a>
</nav>

<!-- As a heading -->
<nav class="navbar navbar-light bg-faded">
  <h1 class="navbar-brand mb-0">Navbar</h1>
</nav>

Adding images to the .navbar-brand will likely always require custom styles or utilities to properly size. Here are some examples to demonstrate.

<!-- Just an image -->
<nav class="navbar navbar-light bg-faded">
  <a class="navbar-brand" href="#">
    <img src="/bootstrap-4.aplha5-doc/assets/brand/bootstrap-solid.svg" width="30" height="30" alt="">
  </a>
</nav>
<!-- Image and text -->
<nav class="navbar navbar-light bg-faded">
  <a class="navbar-brand" href="#">
    <img src="/bootstrap-4.aplha5-doc/assets/brand/bootstrap-solid.svg" width="30" height="30" class="d-inline-block align-top" alt="">
    Bootstrap
  </a>
</nav>

Navbar navigation is similar to our regular nav options—use the .nav base class with a modifier to achieve a particular look. In this case you’ll want .nav.navbar-nav.

Active states—with .active—to indicate the current page can be applied directly to .nav-links or their immediate parent .nav-items.

<nav class="navbar navbar-light bg-faded">
  <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>
</nav>

And because we use classes for our navs, you can avoid the list-based approach entirely if you like.

<nav class="navbar navbar-light bg-faded">
  <div class="nav navbar-nav">
    <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
    <a class="nav-item nav-link" href="#">Features</a>
    <a class="nav-item nav-link" href="#">Pricing</a>
    <a class="nav-item nav-link" href="#">About</a>
  </div>
</nav>

You may also utilize dropdowns in your navbar nav. Dropdown menus require a wrapping element for positioning, so be sure to use separate and nested elements for .nav-item and .nav-link as shown below.

<nav class="navbar navbar-light bg-faded">
  <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 dropdown">
      <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
        Dropdown link
      </a>
      <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
        <a class="dropdown-item" href="#">Action</a>
        <a class="dropdown-item" href="#">Another action</a>
        <a class="dropdown-item" href="#">Something else here</a>
      </div>
    </li>
  </ul>
</nav>

Forms

Place various form controls and components within a navbar with .form-inline. Align them with .float- utilities as needed.

<nav class="navbar navbar-light bg-faded">
  <form class="form-inline float-xs-left">
    <input class="form-control" type="text" placeholder="Search">
    <button class="btn btn-outline-success" type="submit">Search</button>
  </form>
</nav>

Input groups work, too:

<nav class="navbar navbar-light bg-faded">
  <form class="form-inline float-xs-left">
    <div class="input-group">
      <span class="input-group-addon" id="basic-addon1">@</span>
      <input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">
    </div>
  </form>
</nav>

Various buttons are supported as part of these navbar forms, too. This is also a great reminder that vertical alignment utilites can be used to align different sized elements.

<nav class="navbar navbar-light bg-faded">
  <form class="form-inline float-xs-left">
    <button class="btn btn-outline-success" type="button">Main button</button>
    <button class="btn btn-sm align-middle btn-outline-secondary" type="button">Smaller button</button>
  </form>
</nav>

Text

Navbars may contain bits of text with the help of .navbar-text. This class adjusts vertical alignment and horizontal spacing for strings of text.

<nav class="navbar navbar-light bg-faded">
  <span class="navbar-text">
    Navbar text with an inline element
  </span>
</nav>

Using our utility classes, you can change the alignment and appearance of your navbar text.

<nav class="navbar navbar-light bg-faded">
  <span class="navbar-text float-xs-right text-muted">
    Muted navbar text that's floated right
  </span>
</nav>

Similarly, you can use utility classes to align navbar text to other navbar elements like the brand and navigation (which are automatically floated already).

<nav class="navbar navbar-light bg-faded">
  <a class="navbar-brand" href="#">Navbar</a>
  <span class="navbar-text float-xs-left">
    Navbar text that's floated left
  </span>
</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">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-dark bg-primary">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-light" style="background-color: #e3f2fd;">
  <!-- Navbar content -->
</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 a fixed or static top 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.

<nav class="navbar navbar-light bg-faded">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#exCollapsingNavbar" aria-controls="exCollapsingNavbar" aria-expanded="false" aria-label="Toggle navigation"></button>
  <div class="collapse" id="exCollapsingNavbar">
    <div class="bg-inverse text-muted p-1">
      <h4>Collapsed content</h4>
      <span class="text-muted">Toggleable via the navbar brand.</span>
    </div>
  </div>
</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-lg-up" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"></button>
  <div class="collapse navbar-toggleable-md" id="navbarResponsive">
    <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="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="http://example.com" id="responsiveNavbarDropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
        <div class="dropdown-menu" aria-labelledby="responsiveNavbarDropdown">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
    </ul>
    <form class="form-inline float-lg-right">
      <input class="form-control" type="text" placeholder="Search">
      <button class="btn btn-outline-success" type="submit">Search</button>
    </form>
  </div>
</nav>