Hotlink the CSS

For the quickest and easiest start, just copy this snippet into your webpage.

Use it with Less

A fan of using Less? No problem, just clone the repo and add these lines:

Fork on GitHub

Download, fork, pull, file issues, and more with the official Bootstrap repo on Github.

History

In the earlier days of Twitter, engineers used almost any library they were familiar with to meet front-end requirements. Bootstrap began as an answer to the challenges that presented and development quickly accelerated during Twitter’s first Hackweek.

With the help and feedback of many engineers at Twitter, Bootstrap has grown significantly to encompass not only basic styles, but more elegant and durable front-end design patterns.

Browser support

Bootstrap is tested and supported in modern browsers like Chrome, Safari, and Firefox. Full support for some versions of Internet Explorer is in the works.

Latest Safari
Latest Google Chrome
Firefox v4

What's included

Bootstrap comes complete with compiled CSS, uncompiled, and example templates.

All original .less files
Fully compiled and minified CSS
Complete styleguide documentation
Example page template (more to come soon)

Default grid

The default grid system provided as part of Bootstrap is a 940px wide 16-column grid. It’s a flavor of the popular 960 grid system, but without the additional margin/padding on the left and right sides.

Example grid markup

As shown here, a basic layout can be created with two "columns," each spanning a number of the 16 foundational columns we defined as part of our grid system. See the examples below for more variations.

<div class="row">
  <div class="span6 columns">
    ...
  </div>
  <div class="span10 columns">
    ...
  </div>
</div>

Offsetting columns

8 offset 4

4 offset 4

5 offset 3

10 offset 6

Fixed layout

A basic 940px wide, centered container layout for just about any site or page.

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

Fluid layout

A flexible fluid or liquid page structure with min- and max-widths and a left-hand sidebar. Great for apps.

<body>
  <div class="container-fluid">
    <div class="sidebar">
      ...
    </div>
    <div class="content">
      ...
    </div>
  </div>
</body>

Headings and copy

A standard typographic hierarchy for structuring your webpages.

h1. Heading 1

h2. Heading 2

h3. Heading 3

h4. Heading 4

h5. Heading 5

h6. Heading 6

Example paragraph

Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nullam id dolor id nibh ultricies vehicula ut id elit.

Example heading Has sub-heading…

Misc. elements

Using emphasis, addresses, & abbreviations

<strong> <em> <address> <abbr>

When to use

Emphasis tags (<strong> and <em>) should be used to indicate additional importance or emphasis of a word or phrase relative to its surrounding copy. Use <strong> for importance and <em> for stress emphasis.

Emphasis in a paragraph

Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Maecenas faucibus mollis interdum. Nulla vitae elit libero, a pharetra augue.

Note: It's still okay to use <b> and <i> tags in HTML5, but they don't come with inherent styles anymore. <b> is meant to highlight words or phrases without conveying additional importance, while <i> is mostly for voice, technical terms, etc.

Addresses

The <address> element is used for contact information for its nearest ancestor, or the entire body of work. Here’s how it looks:

Twitter, Inc.
795 Folsom Ave, Suite 600
San Francisco, CA 94107
P: (123) 456-7890

Note: Each line in an <address> must end with a line-break (<br />) or be wrapped in a block-level tag (e.g., <p>) to properly structure the content.

Abbreviations

For abbreviations and acronyms, use the <abbr> tag (<acronym> is deprecated in HTML5). Put the shorthand form within the tag and set a title for the complete name.

Blockquotes

<blockquote> <p> <small>

Be sure to wrap your <blockquote> around <p> and <small> tags. When citing a source, use the <small> element. The CSS will automatically preface a name with an em dash (—).

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua…
Dr. Julius Hibbert

Lists

Unordered `<ul>`

Lorem ipsum dolor sit amet
Consectetur adipiscing elit
Integer molestie lorem at massa
Facilisis in pretium nisl aliquet
Nulla volutpat aliquam velit
- Phasellus iaculis neque
- Purus sodales ultricies
- Vestibulum laoreet porttitor sem
- Ac tristique libero volutpat at
Faucibus porta lacus fringilla vel
Aenean sit amet erat nunc
Eget porttitor lorem

Unstyled `<ul.unstyled>`

Lorem ipsum dolor sit amet
Consectetur adipiscing elit
Integer molestie lorem at massa
Facilisis in pretium nisl aliquet
Nulla volutpat aliquam velit
- Phasellus iaculis neque
- Purus sodales ultricies
- Vestibulum laoreet porttitor sem
- Ac tristique libero volutpat at
Faucibus porta lacus fringilla vel
Aenean sit amet erat nunc
Eget porttitor lorem

Ordered `<ol>`

Lorem ipsum dolor sit amet
Consectetur adipiscing elit
Integer molestie lorem at massa
Facilisis in pretium nisl aliquet
Nulla volutpat aliquam velit
Faucibus porta lacus fringilla vel
Aenean sit amet erat nunc
Eget porttitor lorem

Description `dl`

Description lists: A description list is perfect for defining terms.
Euismod: Vestibulum id ligula porta felis euismod semper eget lacinia odio sem nec elit.; Donec id elit non mi porta gravida at eget metus.
Malesuada porta: Etiam porta sem malesuada magna mollis euismod.

Building tables

<table> <thead> <tbody> <tr> <th> <td> <colspan> <caption>

Tables are great—for a lot of things. Great tables, however, need a bit of markup love to be useful, scalable, and readable (at the code level). Here are a few tips to help.

Always wrap your column headers in a <thead> such that hierarchy is <thead> > <tr> > <th>.

Similar to the column headers, all your table’s body content should be wrapped in a <tbody> so your hierarchy is <tbody> > <tr> > <td>.

Example: Default table styles

All tables will be automatically styled with only the essential borders to ensure readability and maintain structure. No need to add extra classes or attributes.

#	First Name	Last Name	Language
1	Some	One	English
2	Joe	Sixpack	English
3	Stu	Dent	Code

<table class="common-table">
  ...
</table>

Example: Zebra-striped

Get a little fancy with your tables by adding zebra-striping—just add the .zebra-striped class.

#	First Name	Last Name	Language
1	Some	One	English
2	Joe	Sixpack	English
3	Stu	Dent	Code

<table class="common-table zebra-striped">
...
</table>

Example: Zebra-striped w/ TableSorter.js

Taking the previous example, we improve the usefulness of our tables by providing sorting functionality via jQuery and the Tablesorter plugin. Click any column’s header to change the sort.

#	First Name	Last Name	Language
1	Your	One	English
2	Joe	Sixpack	English
3	Stu	Dent	Code

<script src="js/jquery/jquery.tablesorter.min.js"></script>
<script >
  $(function() {
    $("table#sortTableExample").tablesorter({ sortList: [[1,0]] });
  });
</script>
<table class="common-table zebra-striped">
  ...
</table>

Fixed topbar

What is it

Our topbar is a fixed bar that houses a website’s logo or name, primary navigation, and search form.

Customizable

All elements within, and the entire topbar as well, are optional. You can choose to include a logo/name, nav, search, and a secondary nav—or any combination of that.

Dropdowns included

As part of the main navigation, we’ve included the ability for you to add dropdowns to your nav. Check out the secondary nav above (right aligned) to see how it’s done.

Tabs and pills

Create simple secondary navigation with a <ul>. Swap between tabs or pills by adding the appropriate class.

Great for sub-sections of content like our account settings pages and user timelines for toggling between pages of like content. Available in tabbed or pill styles.

<ul class="tabs">
  <li class="active"><a href="#">Home</a></li>
  <li><a href="#">Profile</a></li>
  <li><a href="#">Messages</a></li>
  <li><a href="#">Settings</a></li>
  <li><a href="#">Contact</a></li>
</ul>

<ul class="pills">
  <li class="active"><a href="#">Home</a></li>
  <li><a href="#">Profile</a></li>
  <li><a href="#">Messages</a></li>
  <li><a href="#">Settings</a></li>
  <li><a href="#">Contact</a></li>
</ul>

Pagination

Ultra simplistic and minimally styled pagination inspired by Rdio. The large block is hard to miss, easily scalable, and provides large click areas.

<div class="pagination">
  <ul>
    <li class="prev disabled"><a href="#">&larr; Previous</a></li>
    <li class="active"><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 class="next"><a href="#">Next &rarr;</a></li>
  </ul>
</div>

Basic alerts

One-line messages for highlighting the failure, possible failure, or success of an action. Particularly useful for forms.

Oh snap! Change this and that and try again.

Holy gaucamole! Best check yo self, you’re not looking too good.

Well done! You successfully read this alert message.

Heads up! This is an alert that needs your attention, but it’s not a huge priority just yet.

Block messages

For messages that require a bit of explanation, we have paragraph style alerts. These are perfect for bubbling up longer error messages, warning a user of a pending action, or just presenting information for more emphasis on the page.

Oh snap! You got an error! Change this and that and try again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.

Take this action Or do this

Holy gaucamole! This is a warning! Best check yo self, you’re not looking too good. Nulla vitae elit libero, a pharetra augue. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

Take this action Or do this

Well done! You successfully read this alert message. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Maecenas faucibus mollis interdum.

Take this action Or do this

Heads up! This is an alert that needs your attention, but it’s not a huge priority just yet.

Take this action Or do this

Modals

Modals—dialogs or lightboxes—are great for contextual actions in situations where it’s important that the background context be maintained.

Tool Tips

Twipsies are super useful for aiding a confused user and pointing them in the right direction.

Lorem ipsum dolar sit amet illo error ipsum veritatis aut iste perspiciatis iste voluptas natus illo quasi odit aut natus consequuntur consequuntur, aut natus illo voluptatem odit perspiciatis laudantium rem doloremque totam voluptas. Voluptasdicta eaque beatae aperiam ut enim voluptatem explicabo explicabo, voluptas quia odit fugit accusantium totam totam architecto explicabo sit quasi fugit fugit, totam doloremque unde sunt sed dicta quae accusantium fugit voluptas nemo voluptas voluptatem rem quae aut veritatis quasi quae.

below!

right!

left!

above!

Popovers

Use popovers to provide subtextual information to a page without affecting layout.

Bootstrap was built with Preboot, an open-source pack of mixins and variables to be used in conjunction with Less, a CSS preprocessor for faster and easier web development.

Check out how we used Preboot in Bootstrap and how you can make use of it should you choose to run Less on your next project.

How to use it

Use this option to make full use of Bootstrap’s Less variables, mixins, and nesting in CSS via javascript in your browser.

<link rel="stylesheet/less" href="less/bootstrap.less" media="all" />
<script src="js/less-1.0.41.min.js"></script>

Not feeling the .js solution? Try the Less Mac app or use Node.js to compile when you deploy your code.

What’s included

Here are some of the highlights of what’s included in Twitter Bootstrap as part of Bootstrap. Head over to the Bootstrap website or Github project page to download and learn more.

Color variables

Variables in Less are perfect for maintaining and updating your CSS headache free. When you want to change a color value or a frequently used value, update it in one spot and you’re set.

// Links
@linkColor:         #8b59c2;
@linkColorHover:    darken(@linkColor, 10);

// Grays
@black:             #000;
@grayDark:          lighten(@black, 25%);
@gray:              lighten(@black, 50%);
@grayLight:         lighten(@black, 70%);
@grayLighter:       lighten(@black, 90%);
@white:             #fff;

// Accent Colors
@blue:              #08b5fb;
@green:             #46a546;
@red:               #9d261d;
@yellow:            #ffc40d;
@orange:            #f89406;
@pink:              #c3325f;
@purple:            #7a43b6;

// Baseline
@baseline:          20px;

Commenting

Less also provides another style of commenting in addition to CSS’s normal /* ... */ syntax.

// This is a comment
/* This is also a comment */

Mixins up the wazoo

Mixins are basically includes or partials for CSS, allowing you to combine a block of code into one. They’re great for vendor prefixed properties like box-shadow, cross-browser gradients, font stacks, and more. Below is a sample of the mixins that are included with Bootstrap.

Font stacks

#font {
  .shorthand(@weight: normal, @size: 14px, @lineHeight: 20px) {
    font-size: @size;
    font-weight: @weight;
    line-height: @lineHeight;
  }
  .sans-serif(@weight: normal, @size: 14px, @lineHeight: 20px) {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: @size;
    font-weight: @weight;
    line-height: @lineHeight;
  }
  .serif(@weight: normal, @size: 14px, @lineHeight: 20px) {
    font-family: "Georgia", Times New Roman, Times, sans-serif;
    font-size: @size;
    font-weight: @weight;
    line-height: @lineHeight;
  }
  .monospace(@weight: normal, @size: 12px, @lineHeight: 20px) {
    font-family: "Monaco", Courier New, monospace;
    font-size: @size;
    font-weight: @weight;
    line-height: @lineHeight;
  }
}

Gradients

#gradient {
  .horizontal (@startColor: #555, @endColor: #333) {
    background-color: @endColor;
    background-repeat: repeat-x;
    background-image: -khtml-gradient(linear, left top, right top, from(@startColor), to(@endColor)); // Konqueror
    background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+
    background-image: -ms-linear-gradient(left, @startColor, @endColor); // IE10
    background-image: -webkit-gradient(linear, left top, right top, color-stop(0%, @startColor), color-stop(100%, @endColor)); // Safari 4+, Chrome 2+
    background-image: -webkit-linear-gradient(left, @startColor, @endColor); // Safari 5.1+, Chrome 10+
    background-image: -o-linear-gradient(left, @startColor, @endColor); // Opera 11.10
    -ms-filter: %("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",@startColor,@endColor); // IE8+
    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",@startColor,@endColor)); // IE6 & IE7
    background-image: linear-gradient(left, @startColor, @endColor); // Le standard
  }
  .vertical (@startColor: #555, @endColor: #333) {
    background-color: @endColor;
    background-repeat: repeat-x;
    background-image: -khtml-gradient(linear, left top, left bottom, from(@startColor), to(@endColor)); // Konqueror
    background-image: -moz-linear-gradient(@startColor, @endColor); // FF 3.6+
    background-image: -ms-linear-gradient(@startColor, @endColor); // IE10
    background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, @startColor), color-stop(100%, @endColor)); // Safari 4+, Chrome 2+
    background-image: -webkit-linear-gradient(@startColor, @endColor); // Safari 5.1+, Chrome 10+
    background-image: -o-linear-gradient(@startColor, @endColor); // Opera 11.10
    -ms-filter: %("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",@startColor,@endColor); // IE8+
    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",@startColor,@endColor)); // IE6 & IE7
    background-image: linear-gradient(@startColor, @endColor); // The standard
  }
  .directional (@startColor: #555, @endColor: #333, @deg: 45deg) {
    ...
  }
  .vertical-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 0.5, @endColor: #c3325f) {
    ...
  }
}

Operations and grid system

Get fancy and perform some math to generate flexible and powerful mixins like the one below.

// Griditude
@gridColumns:       16;
@gridColumnWidth:   40px;
@gridGutterWidth:   20px;

// Grid System
.container {
  width: @siteWidth;
  margin: 0 auto;
  .clearfix();
}
.columns(@columnSpan: 1) {
  display: inline;
  float: left;
  width: (@gridColumnWidth * @columnSpan) + (@gridGutterWidth * (@columnSpan - 1));
  margin-left: @gridGutterWidth;
  &:first-child {
    margin-left: 0;
  }
}
.offset(@columnOffset: 1) {
  margin-left: (@gridColumnWidth * @columnOffset) + (@gridGutterWidth * (@columnOffset - 1)) !important;
}

Bootstrap

Bootstrap, from Twitter

Hotlink the CSS

Use it with Less

Fork on GitHub

About Bootstrap Brief history, browser support, and more

History

Browser support

What's included

Grid system Rock the standard 940px or roll your own

Default grid

Example grid markup

Offsetting columns

Layouts Basic templates to create webpages

Fixed layout

Fluid layout

Typography Headings, paragraphs, lists, and other inline type elements

Headings and copy

h1. Heading 1

h2. Heading 2

h3. Heading 3

h4. Heading 4

h5. Heading 5

h6. Heading 6

Example paragraph

Example heading Has sub-heading…

Misc. elements

When to use

Emphasis in a paragraph

Addresses

Abbreviations

Blockquotes

Lists

Unordered <ul>

Unstyled <ul.unstyled>

Ordered <ol>

Description dl

Tables For, you guessed it, tabular data

Building tables

Example: Default table styles

Example: Zebra-striped

Example: Zebra-striped w/ TableSorter.js

Forms

Default styles

Stacked forms

Buttons

Example buttons

Alternate sizes

Disabled state

Links

Buttons

Navigation

Fixed topbar

Project Name

Project Name

What is it

Customizable

Dropdowns included

Tabs and pills

Pagination

Alerts & Errors Styles for success, warning, and error messages or alerts

Basic alerts

Block messages

Popovers Components for displaying content in modals, tooltips, and popovers

Modals

Modal Heading

Tool Tips

Popovers

Popover Title

Using Bootstrap with Less Supercharge your CSS with variables, mixins, and functions

How to use it

What’s included

Color variables

Commenting

Mixins up the wazoo

Font stacks

Gradients

Operations and grid system

Unordered `<ul>`

Unstyled `<ul.unstyled>`

Ordered `<ol>`

Description `dl`