Example

Toggleable, contextual menu for displaying lists of links. Made interactive with the dropdown JavaScript plugin.

<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu">
  <li><a tabindex="-1" href="#">Action</a></li>
  <li><a tabindex="-1" href="#">Another action</a></li>
  <li><a tabindex="-1" href="#">Something else here</a></li>
  <li class="divider"></li>
  <li><a tabindex="-1" href="#">Separated link</a></li>
</ul>

Markup

Looking at just the dropdown menu, here's the required HTML. You need to wrap the dropdown's trigger and the dropdown menu within .dropdown, or another element that declares position: relative;. Then just create the menu.

<div class="dropdown">
  <!-- Link or button to toggle dropdown -->
  <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
    <li><a tabindex="-1" href="#">Action</a></li>
    <li><a tabindex="-1" href="#">Another action</a></li>
    <li><a tabindex="-1" href="#">Something else here</a></li>
    <li class="divider"></li>
    <li><a tabindex="-1" href="#">Separated link</a></li>
  </ul>
</div>

Options

Align menus to the right and add include additional levels of dropdowns.

Aligning the menus

Add .pull-right to a .dropdown-menu to right align the dropdown menu.

<ul class="dropdown-menu pull-right" role="menu" aria-labelledby="dLabel">
  ...
</ul>

Disabled menu options

Add .disabled to a <li> in the dropdown to disable the link.

<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu">
  <li><a tabindex="-1" href="#">Regular link</a></li>
  <li class="disabled"><a tabindex="-1" href="#">Disabled link</a></li>
  <li><a tabindex="-1" href="#">Another link</a></li>
</ul>

Sub menus on dropdowns

Add an extra level of dropdown menus, appearing on hover like those of OS X, with some simple markup additions. Add .dropdown-submenu to any li in an existing dropdown menu for automatic styling.

<ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
  ...
  <li class="dropdown-submenu">
    <a tabindex="-1" href="#">More options</a>
    <ul class="dropdown-menu">
      ...
    </ul>
  </li>
</ul>

Examples

Two basic options, along with two more specific variations.

Single button group

Wrap a series of buttons with .btn in .btn-group.

<div class="btn-group">
  <button class="btn">Left</button>
  <button class="btn">Middle</button>
  <button class="btn">Right</button>
</div>

Multiple button groups

Combine sets of <div class="btn-group"> into a <div class="btn-toolbar"> for more complex components.

<div class="btn-toolbar">
  <div class="btn-group">
    ...
  </div>
</div>

Vertical button groups

Make a set of buttons appear vertically stacked rather than horizontally.

<div class="btn-group btn-group-vertical">
  ...
</div>

Checkbox and radio flavors

Button groups can also function as radios, where only one button may be active, or checkboxes, where any number of buttons may be active. View the JavaScript docs for that.

Dropdowns in button groups

Heads up! Buttons with dropdowns must be individually wrapped in their own .btn-group within a .btn-toolbar for proper rendering.

Overview and examples

Use any button to trigger a dropdown menu by placing it within a .btn-group and providing the proper menu markup.

<div class="btn-group">
  <a class="btn dropdown-toggle" data-toggle="dropdown" href="#">
    Action
    <col-md- class="caret"></col-md->
  </a>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Works with all button sizes

Button dropdowns work at any size: .btn-large, .btn-small, or .btn-mini.

Requires JavaScript

Button dropdowns require the Bootstrap dropdown plugin to function.

In some cases—like mobile—dropdown menus will extend outside the viewport. You need to resolve the alignment manually or with custom JavaScript.

Split button dropdowns

Building on the button group styles and markup, we can easily create a split button. Split buttons feature a standard action on the left and a dropdown toggle on the right with contextual links.

<div class="btn-group">
  <button class="btn">Action</button>
  <button class="btn dropdown-toggle" data-toggle="dropdown">
    <col-md- class="caret"></col-md->
  </button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Sizes

Utilize the extra button classes .btn-mini, .btn-small, or .btn-large for sizing.

<div class="btn-group">
  <button class="btn btn-mini">Action</button>
  <button class="btn btn-mini dropdown-toggle" data-toggle="dropdown">
    <col-md- class="caret"></col-md->
  </button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Dropup menus

Dropdown menus can also be toggled from the bottom up by adding a single class to the immediate parent of .dropdown-menu. It will flip the direction of the .caret and reposition the menu itself to move from the bottom up instead of top down.

<div class="btn-group dropup">
  <button class="btn">Dropup</button>
  <button class="btn dropdown-toggle" data-toggle="dropdown">
    <col-md- class="caret"></col-md->
  </button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Lightweight defaults Same markup, different classes

All nav components here—tabs, pills, and lists—share the same base markup and styles through the .nav class.

Basic tabs

Take a regular <ul> of links and add .nav-tabs:

<ul class="nav nav-tabs">
  <li class="active">
    <a href="#">Home</a>
  </li>
  <li><a href="#">...</a></li>
  <li><a href="#">...</a></li>
</ul>

Basic pills

Take that same HTML, but use .nav-pills instead:

<ul class="nav nav-pills">
  <li class="active">
    <a href="#">Home</a>
  </li>
  <li><a href="#">...</a></li>
  <li><a href="#">...</a></li>
</ul>

Disabled state

For any nav component (tabs, pills, or list), add .disabled for gray links and no hover effects. Links will remain clickable, however, unless you remove the href attribute. Alternatively, you could implement custom JavaScript to prevent those clicks.

<ul class="nav nav-pills">
  ...
  <li class="disabled"><a href="#">Home</a></li>
  ...
</ul>

Component alignment

To align nav links, use the .pull-left or .pull-right utility classes. Both classes will add a CSS float in the specified direction.

Stackable

As tabs and pills are horizontal by default, just add a second class, .nav-stacked, to make them appear vertically stacked.

Stacked tabs

<ul class="nav nav-tabs nav-stacked">
  ...
</ul>

Stacked pills

<ul class="nav nav-pills nav-stacked">
  ...
</ul>

Dropdowns

Add dropdown menus with a little extra HTML and the dropdowns JavaScript plugin.

Tabs with dropdowns

<ul class="nav nav-tabs">
  <li class="dropdown">
    <a class="dropdown-toggle"
       data-toggle="dropdown"
       href="#">
        Dropdown
        <b class="caret"></b>
      </a>
    <ul class="dropdown-menu">
      <!-- links -->
    </ul>
  </li>
</ul>

Pills with dropdowns

<ul class="nav nav-pills">
  <li class="dropdown">
    <a class="dropdown-toggle"
       data-toggle="dropdown"
       href="#">
        Dropdown
        <b class="caret"></b>
      </a>
    <ul class="dropdown-menu">
      <!-- links -->
    </ul>
  </li>
</ul>

Nav lists

A simple and easy way to build groups of nav links with optional headers. They're best used in sidebars like the Finder in OS X.

Example nav list

Take a list of links and add class="nav nav-list":

<ul class="nav nav-list">
  <li class="nav-header">List header</li>
  <li class="active"><a href="#">Home</a></li>
  <li><a href="#">Library</a></li>
  ...
</ul>

Note For nesting within a nav list, include class="nav nav-list" on any nested <ul>.

Horizontal dividers

Add a horizontal divider by creating an empty list item with the class .divider, like so:

<ul class="nav nav-list">
  ...
  <li class="divider"></li>
  ...
</ul>

Tabbable nav

Bring your tabs to life with a simple plugin to toggle between content via tabs. Bootstrap integrates tabbable tabs in four styles: top (default), right, bottom, and left.

Tabbable example

To make tabs tabbable, create a .tab-pane with unique ID for every tab and wrap them in .tab-content.

<div class="tabbable"> <!-- Only required for left/right tabs -->
  <ul class="nav nav-tabs">
    <li class="active"><a href="#tab1" data-toggle="tab">Section 1</a></li>
    <li><a href="#tab2" data-toggle="tab">Section 2</a></li>
  </ul>
  <div class="tab-content">
    <div class="tab-pane active" id="tab1">
      <p>I'm in Section 1.</p>
    </div>
    <div class="tab-pane" id="tab2">
      <p>Howdy, I'm in Section 2.</p>
    </div>
  </div>
</div>

Fade in tabs

To make tabs fade in, add .fade to each .tab-pane.

Requires jQuery plugin

All tabbable tabs are powered by our lightweight jQuery plugin. Read more about how to bring tabbable tabs to life on the JavaScript docs page.

Tabbable in any direction

Tabs on the bottom

Flip the order of the HTML and add a class to put tabs on the bottom.

<div class="tabbable tabs-below">
  <div class="tab-content">
    ...
  </div>
  <ul class="nav nav-tabs">
    ...
  </ul>
</div>

Tabs on the left

Swap the class to put tabs on the left.

<div class="tabbable tabs-left">
  <ul class="nav nav-tabs">
    ...
  </ul>
  <div class="tab-content">
    ...
  </div>
</div>

Tabs on the right

Swap the class to put tabs on the right.

<div class="tabbable tabs-right">
  <ul class="nav nav-tabs">
    ...
  </ul>
  <div class="tab-content">
    ...
  </div>
</div>

Basic navbar

To start, navbars are static (not fixed to the top) and include support for a project name and basic navigation. Place one anywhere within a .container, which sets the width of your site and content.

<div class="navbar">
  <div class="navbar-inner">
    <a class="brand" href="#">Title</a>
    <ul class="nav">
      <li class="active"><a href="#">Home</a></li>
      <li><a href="#">Link</a></li>
      <li><a href="#">Link</a></li>
    </ul>
  </div>
</div>

Navbar components

Brand

A simple link to show your brand or project name only requires an anchor tag.

<a class="brand" href="#">Project name</a>

Nav links

Nav items are simple to add via unordered lists.

<ul class="nav">
  <li class="active">
    <a href="#">Home</a>
  </li>
  <li><a href="#">Link</a></li>
  <li><a href="#">Link</a></li>
</ul>

You can easily add dividers to your nav links with an empty list item and a simple class. Just add this between links:

<ul class="nav">
  ...
  <li class="divider-vertical"></li>
  ...
</ul>

Forms

To properly style and position a form within the navbar, add the appropriate classes as shown below. For a default form, include .navbar-form and either .pull-left or .pull-right to properly align it.

<form class="navbar-form pull-left">
  <input type="text" class="col-md-2">
  <button type="submit" class="btn">Submit</button>
</form>

Search form

For a more customized search form, add .navbar-search to the form and .search-query to the input for specialized styles in the navbar.

<form class="navbar-search pull-left">
  <input type="text" class="search-query" placeholder="Search">
</form>

Component alignment

Align nav links, search form, or text, use the .pull-left or .pull-right utility classes. Both classes will add a CSS float in the specified direction.

Using dropdowns

Add dropdowns and dropups to the nav with a bit of markup and the dropdowns JavaScript plugin.

<ul class="nav">
  <li class="dropdown">
    <a href="#" class="dropdown-toggle" data-toggle="dropdown">
      Account
      <b class="caret"></b>
    </a>
    <ul class="dropdown-menu">
      ...
    </ul>
  </li>
</ul>

Visit the JavaScript dropdowns documentation for more markup and information on calling dropdowns.

Text

Wrap strings of text in an element with .navbar-text, usually on a <p> tag for proper leading and color.

Optional display variations

Fix the navbar to the top or bottom of the viewport with an additional class on the outermost div, .navbar.

Fixed to top

Add .navbar-fixed-top and remember to account for the hidden area underneath it by adding at least 40px padding to the <body>. Be sure to add this after the core Bootstrap CSS and before the optional responsive CSS.

<div class="navbar navbar-fixed-top">
  ...
</div>

Fixed to bottom

Add .navbar-fixed-bottom instead.

<div class="navbar navbar-fixed-bottom">
  ...
</div>

Static top navbar

Create a full-width navbar that scrolls away with the page by adding .navbar-static-top. Unlike the .navbar-fixed-top class, you do not need to change any padding on the body.

<div class="navbar navbar-static-top">
  ...
</div>

Responsive navbar

To implement a collapsing responsive navbar, wrap your navbar content in a containing div, .nav-collapse.collapse, and add the navbar toggle button, .btn-navbar.

<div class="navbar">
  <div class="navbar-inner">
    <div class="container">

      <!-- .btn-navbar is used as the toggle for collapsed navbar content -->
      <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
        <col-md- class="icon-bar"></col-md->
        <col-md- class="icon-bar"></col-md->
        <col-md- class="icon-bar"></col-md->
      </a>

      <!-- Be sure to leave the brand out there if you want it shown -->
      <a class="brand" href="#">Project name</a>

      <!-- Everything you want hidden at 940px or less, place within here -->
      <div class="nav-collapse collapse">
        <!-- .nav, .navbar-search, .navbar-form, etc -->
      </div>

    </div>
  </div>
</div>

Inverted variation

Modify the look of the navbar by adding .navbar-inverse.

<div class="navbar navbar-inverse">
  ...
</div>

Examples

A single example shown as it might be displayed across multiple pages.

<ul class="breadcrumb">
  <li><a href="#">Home</a> <col-md- class="divider">/</col-md-></li>
  <li><a href="#">Library</a> <col-md- class="divider">/</col-md-></li>
  <li class="active">Data</li>
</ul>

Standard pagination

Simple pagination inspired by Rdio, great for apps and search results. The large block is hard to miss, easily scalable, and provides large click areas.

<div class="pagination">
  <ul>
    <li><a href="#">Prev</a></li>
    <li><a href="#">1</a></li>
    <li><a href="#">2</a></li>
    <li><a href="#">3</a></li>
    <li><a href="#">4</a></li>
    <li><a href="#">5</a></li>
    <li><a href="#">Next</a></li>
  </ul>
</div>

Options

Disabled and active states

Links are customizable for different circumstances. Use .disabled for unclickable links and .active to indicate the current page.

<div class="pagination">
  <ul>
    <li class="disabled"><a href="#">«</a></li>
    <li class="active"><a href="#">1</a></li>
    ...
  </ul>
</div>

You can optionally swap out active or disabled anchors for col-md-s to remove click functionality while retaining intended styles.

<div class="pagination">
  <ul>
    <li class="disabled"><col-md->«</col-md-></li>
    <li class="active"><col-md->1</col-md-></li>
    ...
  </ul>
</div>

Sizes

Fancy larger or smaller pagination? Add .pagination-large, .pagination-small, or .pagination-mini for additional sizes.

<div class="pagination pagination-large">
  <ul>
    ...
  </ul>
</div>
<div class="pagination">
  <ul>
    ...
  </ul>
</div>
<div class="pagination pagination-small">
  <ul>
    ...
  </ul>
</div>
<div class="pagination pagination-mini">
  <ul>
    ...
  </ul>
</div>

Alignment

Add one of two optional classes to change the alignment of pagination links: .pagination-centered and .pagination-right.

<div class="pagination pagination-centered">
  ...
</div>

<div class="pagination pagination-right">
  ...
</div>

Pager

Quick previous and next links for simple pagination implementations with light markup and styles. It's great for simple sites like blogs or magazines.

Default example

By default, the pager centers links.

<ul class="pager">
  <li><a href="#">Previous</a></li>
  <li><a href="#">Next</a></li>
</ul>

Aligned links

Alternatively, you can align each link to the sides:

<ul class="pager">
  <li class="previous">
    <a href="#">← Older</a>
  </li>
  <li class="next">
    <a href="#">Newer →</a>
  </li>
</ul>

Optional disabled state

Pager links also use the general .disabled utility class from the pagination.

<ul class="pager">
  <li class="previous disabled">
    <a href="#">← Older</a>
  </li>
  ...
</ul>

Labels

Badges

Easily collapsible

For easy implementation, labels and badges will simply collapse (via CSS's :empty selector) when no content exists within.

Hero unit

A lightweight, flexible component to showcase key content on your site. It works well on marketing and content-heavy sites.

<div class="hero-unit">
  <h1>Heading</h1>
  <p>Tagline</p>
  <p>
    <a class="btn btn-primary btn-large">
      Learn more
    </a>
  </p>
</div>

Page header

A simple shell for an h1 to appropriately space out and segment sections of content on a page. It can utilize the h1's default small, element as well most other components (with additional styles).

<div class="page-header">
  <h1>Example page header <small>Subtext for header</small></h1>
</div>

Default thumbnails

By default, Bootstrap's thumbnails are designed to showcase linked images with minimal required markup.

Highly customizable

With a bit of extra markup, it's possible to add any kind of HTML content like headings, paragraphs, or buttons into thumbnails.

Why use thumbnails

Thumbnails (previously .media-grid up until v1.4) are great for grids of photos or videos, image search results, retail products, portfolios, and much more. They can be links or static content.

Simple, flexible markup

Thumbnail markup is simple—a ul with any number of li elements is all that is required. It's also super flexible, allowing for any type of content with just a bit more markup to wrap your contents.

Uses grid column sizes

Lastly, the thumbnails component uses existing grid system classes—like .col-md-2 or .col-md-3—for control of thumbnail dimensions.

Markup

As mentioned previously, the required markup for thumbnails is light and straightforward. Here's a look at the default setup for linked images:

<ul class="thumbnails">
  <li class="col-md-4">
    <a href="#" class="thumbnail">
      <img data-src="holder.js/300x200" alt="">
    </a>
  </li>
  ...
</ul>

For custom HTML content in thumbnails, the markup changes slightly. To allow block level content anywhere, we swap the <a> for a <div> like so:

<ul class="thumbnails">
  <li class="col-md-4">
    <div class="thumbnail">
      <img data-src="holder.js/300x200" alt="">
      <h3>Thumbnail label</h3>
      <p>Thumbnail caption...</p>
    </div>
  </li>
  ...
</ul>

More examples

Explore all your options with the various grid classes available to you. You can also mix and match different sizes.

Default alert

Wrap any text and an optional dismiss button in .alert for a basic warning alert message.

<div class="alert">
  <button type="button" class="close" data-dismiss="alert">×</button>
  <strong>Warning!</strong> Best check yo self, you're not looking too good.
</div>

Dismiss buttons

Mobile Safari and Mobile Opera browsers, in addition to the data-dismiss="alert" attribute, require an href="#" for the dismissal of alerts when using an <a> tag.

<a href="#" class="close" data-dismiss="alert">×</a>

Alternatively, you may use a <button> element with the data attribute, which we have opted to do for our docs. When using <button>, you must include type="button" or your forms may not submit.

<button type="button" class="close" data-dismiss="alert">×</button>

Dismiss alerts via JavaScript

Use the alerts jQuery plugin for quick and easy dismissal of alerts.

Options

For longer messages, increase the padding on the top and bottom of the alert wrapper by adding .alert-block.

<div class="alert alert-block">
  <button type="button" class="close" data-dismiss="alert">×</button>
  <h4>Warning!</h4>
  Best check yo self, you're not...
</div>

Contextual alternatives

Add optional classes to change an alert's connotation.

Error or danger

<div class="alert alert-error">
  ...
</div>

Success

<div class="alert alert-success">
  ...
</div>

Information

<div class="alert alert-info">
  ...
</div>

Examples and markup

Basic

Default progress bar with a vertical gradient.

<div class="progress">
  <div class="bar" style="width: 60%;"></div>
</div>

Striped

Uses a gradient to create a striped effect. Not available in IE7-8.

<div class="progress progress-striped">
  <div class="bar" style="width: 20%;"></div>
</div>

Animated

Add .active to .progress-striped to animate the stripes right to left. Not available in all versions of IE.

<div class="progress progress-striped active">
  <div class="bar" style="width: 40%;"></div>
</div>

Stacked

Place multiple bars into the same .progress to stack them.

<div class="progress">
  <div class="bar bar-success" style="width: 35%;"></div>
  <div class="bar bar-warning" style="width: 20%;"></div>
  <div class="bar bar-danger" style="width: 10%;"></div>
</div>

Options

Additional colors

Progress bars use some of the same button and alert classes for consistent styles.

<div class="progress progress-info">
  <div class="bar" style="width: 20%"></div>
</div>
<div class="progress progress-success">
  <div class="bar" style="width: 40%"></div>
</div>
<div class="progress progress-warning">
  <div class="bar" style="width: 60%"></div>
</div>
<div class="progress progress-danger">
  <div class="bar" style="width: 80%"></div>
</div>

Striped bars

Similar to the solid colors, we have varied striped progress bars.

<div class="progress progress-info progress-striped">
  <div class="bar" style="width: 20%"></div>
</div>
<div class="progress progress-success progress-striped">
  <div class="bar" style="width: 40%"></div>
</div>
<div class="progress progress-warning progress-striped">
  <div class="bar" style="width: 60%"></div>
</div>
<div class="progress progress-danger progress-striped">
  <div class="bar" style="width: 80%"></div>
</div>

Browser support

Progress bars use CSS3 gradients, transitions, and animations to achieve all their effects. These features are not supported in IE7-9 or older versions of Firefox.

Versions earlier than Internet Explorer 10 and Opera 12 do not support animations.

Abstract object styles for building various types of components (like blog comments, Tweets, etc) that feature a left- or right-aligned image alongside textual content.

Default example

The default media allow to float a media object (images, video, audio) to the left or right of a content block.

Media heading

Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.

Media heading

Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.

Media heading

Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.

<div class="media">
  <a class="pull-left" href="#">
    <img class="media-object" data-src="holder.js/64x64">
  </a>
  <div class="media-body">
    <h4 class="media-heading">Media heading</h4>
    ...

    <!-- Nested media object -->
    <div class="media">
      ...
    </div>
  </div>
</div>

Media list

With a bit of extra markup, you can use media inside list (useful for comment threads or articles lists).

<ul class="media-list">
  <li class="media">
    <a class="pull-left" href="#">
      <img class="media-object" data-src="holder.js/64x64">
    </a>
    <div class="media-body">
      <h4 class="media-heading">Media heading</h4>
      ...

      <!-- Nested media object -->
      <div class="media">
        ...
     </div>
    </div>
  </li>
</ul>

Wells

Use the well as a simple effect on an element to give it an inset effect.

<div class="well">
  ...
</div>

Optional classes

Control padding and rounded corners with two optional modifier classes.

<div class="well well-large">
  ...
</div>

<div class="well well-small">
  ...
</div>

Close icon

Use the generic close icon for dismissing content like modals and alerts.

<button class="close">×</button>

iOS devices require an href="#" for click events if you would rather use an anchor.

<a class="close" href="#">×</a>

Helper classes

Simple, focused classes for small display or behavior tweaks.

.pull-left

Float an element left

class="pull-left"

.pull-left {
  float: left;
}

.pull-right

Float an element right

class="pull-right"

.pull-right {
  float: right;
}

.muted

Change an element's color to #999

class="muted"

.muted {
  color: #999;
}

.clearfix

Clear the float on any element

class="clearfix"

.clearfix {
  *zoom: 1;
  &:before,
  &:after {
    display: table;
    content: "";
  }
  &:after {
    clear: both;
  }
}

Requires HTML5 doctype

Bootstrap makes use of certain HTML elements and CSS properties that require the use of the HTML5 doctype. Include it at the beginning of all your projects.

<!DOCTYPE html>
<html lang="en">
  ...
</html>

Typography and links

Bootstrap sets basic global display, typography, and link styles. Specifically, we:

• Remove margin on the body
• Set background-color: white; on the body
• Use the @baseFontFamily, @baseFontSize, and @baseLineHeight attributes as our typographic base
• Set the global link color via @linkColor and apply link underlines only on :hover

These styles can be found within scaffolding.less.

Reset via Normalize

With Bootstrap 2, the old reset block has been dropped in favor of Normalize.css, a project by Nicolas Gallagher and Jonathan Neal that also powers the HTML5 Boilerplate. While we use much of Normalize within our reset.less, we have removed some elements specifically for Bootstrap.

Live grid example

The default Bootstrap grid system utilizes 12 columns, making for a 940px wide container without responsive features enabled. With the responsive CSS file added, the grid adapts to be 724px and 1170px wide depending on your viewport. Below 767px viewports, the columns become fluid and stack vertically.

Basic grid HTML

For a simple two column layout, create a .row and add the appropriate number of .col-md-* columns. As this is a 12-column grid, each .col-md-* col-md-s a number of those 12 columns, and should always add up to 12 for each row (or the number of columns in the parent).

<div class="row">
  <div class="col-md-4">...</div>
  <div class="col-md-8">...</div>
</div>

Given this example, we have .col-md-4 and .col-md-8, making for 12 total columns and a complete row.

Offsetting columns

Move columns to the right using .offset* classes. Each class increases the left margin of a column by a whole column. For example, .offset4 moves .col-md-4 over four columns.

<div class="row">
  <div class="col-md-4">...</div>
  <div class="col-md-3 offset2">...</div>
</div>

Nesting columns

To nest your content with the default grid, add a new .row and set of .col-md-* columns within an existing .col-md-* column. Nested rows should include a set of columns that add up to the number of columns of its parent.

<div class="row">
  <div class="col-md-9">
    Level 1 column
    <div class="row">
      <div class="col-md-6">Level 2</div>
      <div class="col-md-3">Level 2</div>
    </div>
  </div>
</div>

Live fluid grid example

The fluid grid system uses percents instead of pixels for column widths. It has the same responsive capabilities as our fixed grid system, ensuring proper proportions for key screen resolutions and devices.

Basic fluid grid HTML

Make any row "fluid" by changing .row to .row-fluid. The column classes stay the exact same, making it easy to flip between fixed and fluid grids.

<div class="row-fluid">
  <div class="col-md-4">...</div>
  <div class="col-md-8">...</div>
</div>

Fluid offsetting

Operates the same way as the fixed grid system offsetting: add .offset* to any column to offset by that many columns.

<div class="row-fluid">
  <div class="col-md-4">...</div>
  <div class="col-md-4 offset2">...</div>
</div>

Fluid nesting

Fluid grids utilize nesting differently: each nested level of columns should add up to 12 columns. This is because the fluid grid uses percentages, not pixels, for setting widths.

<div class="row-fluid">
  <div class="col-md-12">
    Fluid 12
    <div class="row-fluid">
      <div class="col-md-6">
        Fluid 6
        <div class="row-fluid">
          <div class="col-md-6">Fluid 6</div>
          <div class="col-md-6">Fluid 6</div>
        </div>
      </div>
      <div class="col-md-6">Fluid 6</div>
    </div>
  </div>
</div>

Fixed layout

Provides a common fixed-width (and optionally responsive) layout with only <div class="container"> required.

<body>
  <div class="container">
    ...
  </div>
</body>

Fluid layout

Create a fluid, two-column page with <div class="container-fluid">—great for applications and docs.

<div class="container-fluid">
  <div class="row-fluid">
    <div class="col-md-2">
      <!--Sidebar content-->
    </div>
    <div class="col-md-10">
      <!--Body content-->
    </div>
  </div>
</div>

Enabling responsive features

Turn on responsive CSS in your project by including the proper meta tag and additional stylesheet within the <head> of your document. If you've compiled Bootstrap from the Customize page, you need only include the meta tag.

<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="/assets/css/bootstrap-responsive.css" rel="stylesheet">

Heads up! Bootstrap doesn't include responsive features by default at this time as not everything needs to be responsive. Instead of encouraging developers to remove this feature, we figure it best to enable it as needed.

About responsive Bootstrap

Media queries allow for custom CSS based on a number of conditions—ratios, widths, display type, etc—but usually focuses around min-width and max-width.

• Modify the width of column in our grid
• Stack elements instead of float wherever necessary
• Resize headings and text to be more appropriate for devices

Use media queries responsibly and only as a start to your mobile audiences. For larger projects, do consider dedicated code bases and not layers of media queries.

Supported devices

Bootstrap supports a handful of media queries in a single file to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:

/* Large desktop */
@media (min-width: 1200px) { ... }

/* Portrait tablet to landscape and desktop */
@media (min-width: 768px) and (max-width: 979px) { ... }

/* Landscape phone to portrait tablet */
@media (max-width: 767px) { ... }

/* Landscape phones and down */
@media (max-width: 480px) { ... }

Responsive utility classes

For faster mobile-friendly development, use these utility classes for showing and hiding content by device. Below is a table of the available classes and their effect on a given media query layout (labeled by device). They can be found in responsive.less.

When to use

Use on a limited basis and avoid creating entirely different versions of the same site. Instead, use them to complement each device's presentation. Responsive utilities should not be used with tables, and as such are not supported.

Responsive utilities test case

Resize your browser or load on different devices to test the above classes.

Visible on...

Green checkmarks indicate that class is visible in your current viewport.

• Phone✔ Phone
• Tablet✔ Tablet
• Desktop✔ Desktop

Hidden on...

Here, green checkmarks indicate that class is hidden in your current viewport.

• Phone✔ Phone
• Tablet✔ Tablet
• Desktop✔ Desktop