Base CSS

On top of the scaffolding, basic HTML elements are styled and enhanced with extensible classes to provide a fresh, consistent look and feel.

Headings & body copy

Typographic scale

The entire typographic grid is based on two Less variables in our preboot.less file: @baseFontSize and @baseLineHeight. The first is the base font-size used throughout and the second is the base line-height.

We use those variables, and some math, to create the margins, paddings, and line-heights of all our type and more.

Example body text

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.

Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Donec sed odio dui.

h1. Heading 1

h2. Heading 2

h3. Heading 3

h4. Heading 4

h5. Heading 5
h6. Heading 6

Emphasis, address, and abbreviation

Element Usage Optional
<strong> For emphasizing a snippet of text with important None
<em> For emphasizing a snippet of text with stress None
<abbr> Wraps abbreviations and acronyms to show the expanded version on hover Include optional title for expanded text
<address> For contact information for its nearest ancestor or the entire body of work Preserve formatting by ending all lines with <br>

Using emphasis

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: Feel free to use <b> and <i> in HTML5, but their usage has changed a bit. <b> is meant to highlight words or phrases without conveying additional importance while <i> is mostly for voice, technical terms, etc.

Example addresses

Here are two examples of how the <address> tag can be used:

Twitter, Inc.
795 Folsom Ave, Suite 600
San Francisco, CA 94107
P: (123) 456-7890
Full Name
first.last@gmail.com

Example abbreviations

Abbreviations are styled with uppercase text and a light dotted bottom border. They also have a help cursor on hover so users have extra indication something will be shown on hover.

HTML is the best thing since sliced bread.

An abbreviation of the word attribute is attr.

Blockquotes

Element Usage Optional
<blockquote> Block-level element for quoting content from another source

Add cite attribute for source URL

Use .pull-left and .pull-right classes for floated options
<small> Optional element for adding a user-facing citation, typically an author with title of work Place the <cite> around the title or name of source

To include a blockquote, wrap <blockquote> around any HTML as the quote. For straight quotes we recommend a <p>.

Include an optional <small> element to cite your source and you'll get an em dash &mdash; before it for styling purposes.

<blockquote>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis.</p>
  <small>Someone famous</small>
</blockquote>

Example blockquotes

Default blockquotes are styled as such:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis.

Someone famous in Body of work

To float your blockquote to the right, add class="pull-right":

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis.

Someone famous in Body of work

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 class="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>

  1. Lorem ipsum dolor sit amet
  2. Consectetur adipiscing elit
  3. Integer molestie lorem at massa
  4. Facilisis in pretium nisl aliquet
  5. Nulla volutpat aliquam velit
  6. Faucibus porta lacus fringilla vel
  7. Aenean sit amet erat nunc
  8. 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.

Code Inline and block

Element Result
<code> In a line of text like this, your wrapped code will look like this <html> element.
<pre>
<div>
  <h1>Heading</h1>
  <p>Something right here…</p>
</div>

Note: Be sure to keep code within <pre> tags as close to the left as possible; it will render all tabs.

<pre class="prettyprint">

Using the google-code-prettify library, your blocks of code get a slightly different visual style and automatic syntax highlighting. You can also add an additional class to add line numbers.

<div>
  <h1>Heading</h1>
  <p>Something right here…</p>
</div>
<div>
  <h1>Heading</h1>
  <p>Something right here…</p>
</div>

Download google-code-prettify and view the readme for how to use.

Inline labels for special attention

Labels Markup
Default <span class="label">Default</span>
New <span class="label success">New</span>
Warning <span class="label warning">Warning</span>
Important <span class="label important">Important</span>
Info <span class="label info">Info</span>

Table markup

Tag Description
<table> Wrapping element for displaying data in a tabular format
<thead> Container element for table header rows (<tr>) to label table columns
<tbody> Container element for table rows (<tr>) in the body of the table
<tr> Container element for a set of table cells (<td> or <th>) that appears on a single row
<td> Default table cell
<th> Special table cell for column (or row, depending on scope and placement) labels
Must be used within a <thead>
<caption> Description or summary of what the table holds, especially useful for screen readers
<table>
  <thead>
    <tr>
      <th>…</th>
      <th>…</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>…</td>
      <td>…</td>
    </tr>
  </tbody>
</table>

Table options

Name Class Description
Default None No styles, just columns and rows
Basic .table Only horizontal lines between rows
Bordered .table-bordered Rounds corners and adds outter border
Zebra-stripe .table-striped Adds light gray background color to odd rows (1, 3, 5, etc)
Condensed .table-condensed Cuts vertical padding in half, from 8px to 4px, within all td and th elements

Example tables

1. Default table styles

Tables are automatically styled with only a few borders to ensure readability and maintain structure. With 2.0, the .table class is required.

<table class="table">
  …
</table>
# First Name Last Name Language
1 Mark Otto CSS
2 Jacob Thornton Javascript
3 Stu Dent HTML

2. Striped table

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

Note: Sprited tables use the :nth-child CSS selector and is not available in IE7-IE8.

<table class="table table-striped">
  …
</table>
# First Name Last Name Language
1 Mark Otto CSS
2 Jacob Thornton Javascript
3 Stu Dent HTML

3. Bordered table

Add borders around the entire table and rounded corners for aesthetic purposes.

<table class="table table-bordered">
  …
</table>
# First Name Last Name Language
1 Mark Otto CSS
2 Jacob Thornton Javascript
3 Stu Dent
3 Brosef Stalin HTML

4. Condensed table

Make your tables more compact by adding the .table-condensed class to cut table cell padding in half (from 8px to 4px).

<table class="table table-condensed">
  …
</table>
# First Name Last Name Language
1 Mark Otto CSS
2 Jacob Thornton Javascript
3 Stu Dent HTML

5. Combine them all!

Feel free to combine any of the table classes to achieve different looks by utilizing any of the available classes.

<table class="table table-striped table-bordered table-condensed">
  ...
</table>
# First Name Last Name Language
1 Mark Otto CSS
2 Jacob Thornton Javascript
3 Stu Dent HTML
4 Brosef Stalin HTML

Flexible HTML and CSS

The best part about forms in Bootstrap is that all your inputs and controls look great no matter how you build them in your markup. No superfluous HTML is required, but we provide the patterns for those who require it.

More complicated layouts come with succinct and scalable classes for easy styling and event binding, so you're covered at every step.

Four layouts included

Bootstrap comes with support for four types of form layouts:

  • Vertical (default)
  • Search
  • Inline
  • Horizontal

Different types of form layouts require some changes to markup, but the controls themselves remain and behave the same.

Control states and more

Bootstrap's forms include styles for all the base form controls like input, textarea, and select you'd expect. But it also comes with a number of custom components like appended and prepended inputs and support for lists of checkboxes.

States like error, warning, and success are included for each type of form control. Also included are styles for disabled controls.

Four types of forms

Bootstrap provides simple markup and styles for four styles of common web forms.

Name Class Description
Vertical (default) .form-vertical (not required) Stacked, left-aligned labels over controls
Horizontal .form-horizontal Float left, right-aligned labels on same line as controls
Inline .form-inline Left-aligned label and inline-block controls for compact style
Search .form-search Extra-rounded text input for a typical search aesthetic

Example forms using just form controls, no extra markup

Basic form

With v2.0, we have lighter and smarter defaults for form styles. No extra markup, just form controls.

Associated help text!

Search form

Reflecting default WebKit styles, just add .form-search for extra rounded search fields.

Inline form

Inputs are block level to start. For .form-inline and .form-horizontal, we use inline-block.


Horizontal forms

Controls Bootstrap supports

In addition to freeform text, any HTML5 text-based input appears like so.

What's included

Shown on the left are all the default form controls we support. Here's the bulleted list:

  • text inputs (text, password, email, etc)
  • checkbox
  • radio
  • select
  • multiple select
  • file input
  • textarea

New defaults with v2.0

Up to v1.4, Bootstrap's default form styles used the horizontal layout. With Bootstrap 2, we removed that constraint to have smarter, more scalable defaults for any form.


Form control states
Something may have gone wrong
Please correct the error
Woohoo!
Woohoo!

Redesigned browser states

Bootstrap features styles for browser-supported focused and disabled states. We remove the default Webkit outline and apply a box-shadow in it's place for :focus.


Form validation

It also includes validation styles for errors, warnings, and success. To use, add the a class to the surrounding .control-group.

<fieldset
  class="control-group error">
  …
</fieldset>

Extending form controls

Use the same .span* classes from the grid system for input sizes.

@

Here's some help text

.00

Here's more help text

Note: Labels surround all the options for much larger click areas and a more usable form.

Prepend & append inputs

Input groups—with appended or prepended text—provide an easy way to give more context for your inputs. Great examples include the @ sign for Twitter usernames or $ for finances.


Checkboxes and radios

Up to v1.4, Bootstrap required extra markup around checkboxes and radios to stack them. Now, it's a simple matter of repeating the <label class="checkbox"> that wraps the <input type="checkbox">.

Inline checkboxes and radios are also supported. Just add .inline to any .checkbox or .radio and you're done.

Button Class Description
Default .btn Standard gray button with gradient
Primary .primary Provides extra visual weight and identifies the primary action in a set of buttons
Info .info Used as an alternate to the default styles
Success .success Indicates a successful or positive action
Danger .danger Indicates a dangerous or potentially negative action

Buttons for actions

As a convention, buttons should only be used for actions while hyperlinks are to be used for objects. For instance, "Download" should be a button while "recent activity" should be a link.

For anchors and forms

Button styles can be applied to anything with the .btn applied. However, typically you’ll want to apply these to only <a> and <button> elements.

Note: All buttons must include the .btn class. Button styles should be applied to <button> and <a> elements for consistency.

Multiple sizes

Fancy larger or smaller buttons? Have at it!

Primary action Action

Primary action Action

Disabled state

For disabled buttons, use .disabled for links and :disabled for <button> elements.

Primary action Action

Cross browser compatibility

In IE9, we drop the gradient on all buttons in favor of rounded corners as IE9 doesn't crop background gradients to the corners.

Related, IE9 jankifies disabled button elements, rendering text gray with a nasty text-shadow—unfortunately we can't fix this.


Heads up! On hover we show a light red background color to highlight the size of the icon. This won't appear in normal usage of icons.

Built as a sprite

Instead of making every icon an extra request, we've compiled them into a sprite—a bunch of images in one file that uses CSS to position the images with background-position. This is the same method we use on Twitter.com and it has worked well for us.

Glyphicons has granted us use of the Halflings set in our open-source toolkit so long as we provide a link and credit. Please consider doing the same in your projects.

How to use

With v2.0.0, we have opted to use an <i> tag for all our icons with a base class of .icon. To use, place the following code just about anywhere:

<i class="icon search"></i>

There are over 100 classes to choose from for your icons. Just add an <i> tag with the right classes and you're set. You can find the full list in sprites.less or right here in this document.

Use cases

Icons are great, but where would one use them? Here are a few ideas:

  • As visuals for your sidebar navigation
  • For a purely icon-driven nav
  • For buttons to help convey the meaning of an action
  • With links to share context on a user's destination

Essentially, anywhere you can put an <i> tag, you can put an icon.

Examples

Use them in buttons, or in button groups for a toolbar style presentation.

Refresh Settings

Or, use them in navigation.