# Global settings

### 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 `@font-family-base`, `@font-size-base`, and `@line-height-base` attributes as our typographic base
- Set the global link color via `@link-color` and apply link underlines only on `:hover`

These styles can be found within scaffolding.less.

### Normalize reset

For improved cross-browser rendering, we use Normalize, a project by Nicolas Gallagher and Jonathan Neal.

# Typography

## Headings

All HTML headings, `<h1>` through `<h6>` are available.

# h1. Heading 1

## h2. Heading 2

### h3. Heading 3

#### h4. Heading 4

##### h5. Heading 5

###### h6. Heading 6

## Body copy

Bootstrap's global default `font-size` is 14px, with a `line-height` of 20px. This is applied to the `<body>` and all paragraphs. In addition, `<p>` (paragraphs) receive a bottom margin of half their line-height (10px by default).

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.

Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec ullamcorper nulla non metus auctor fringilla. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Donec ullamcorper nulla non metus auctor fringilla.

Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit.

    <p>...</p>

### Lead body copy

Make a paragraph stand out by adding `.lead`.

Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus.

    <p class="lead">...</p>

### Built with Less

The typographic scale is based on two LESS variables in variables.less: `@font-size-base` and `@line-height-base`. The first is the base font-size used throughout and the second is the base line-height. We use those variables and some simple math to create the margins, paddings, and line-heights of all our type and more. Customize them and Bootstrap adapts.

## Emphasis

Make use of HTML's default emphasis tags with lightweight styles.

### `<small>`

For de-emphasizing inline or blocks of text, use the small tag.

This line of text is meant to be treated as fine print.

    <p>
      <small>This line of text is meant to be treated as fine print.</small>
    </p>

### Bold

For emphasizing a snippet of text with a heavier font-weight.

The following snippet of text is rendered as bold text.

    <strong>rendered as bold text</strong>

### Italics

For emphasizing a snippet of text with italics.

The following snippet of text is rendered as italicized text.

    <em>rendered as italicized text</em>

Feel free to use `<b>` and `<i>` in HTML5. `<b>` is meant to highlight words or phrases without conveying additional importance while `<i>` is mostly for voice, technical terms, etc.

### Alignment classes

Easily realign text to components with text alignment classes.

Left aligned text.

Center aligned text.

Right aligned text.

    <p class="text-left">Left aligned text.</p>
    <p class="text-center">Center aligned text.</p>
    <p class="text-right">Right aligned text.</p>

### Emphasis classes

Convey meaning through color with a handful of emphasis utility classes.

Fusce dapibus, tellus ac cursus commodo, tortor mauris nibh.

Etiam porta sem malesuada magna mollis euismod.

Donec ullamcorper nulla non metus auctor fringilla.

Duis mollis, est non commodo luctus, nisi erat porttitor ligula.

    <p class="muted">Fusce dapibus, tellus ac cursus commodo, tortor mauris nibh.</p>
    <p class="text-warning">Etiam porta sem malesuada magna mollis euismod.</p>
    <p class="text-error">Donec ullamcorper nulla non metus auctor fringilla.</p>
    <p class="text-success">Duis mollis, est non commodo luctus, nisi erat porttitor ligula.</p>

## Abbreviations

Stylized implementation of HTML's `<abbr>` element for abbreviations and acronyms to show the expanded version on hover. Abbreviations with a `title` attribute have a light dotted bottom border and a help cursor on hover, providing additional context on hover.

### `<abbr>`

For expanded text on long hover of an abbreviation, include the `title` attribute.

An abbreviation of the word attribute is attr.

    <abbr title="attribute">attr</abbr>

### `<abbr class="initialism">`

Add `.initialism` to an abbreviation for a slightly smaller font-size.

HTML is the best thing since sliced bread.

    <abbr title="HyperText Markup Language" class="initialism">HTML</abbr>

## Addresses

Present contact information for the nearest ancestor or the entire body of work.

### `<address>`

Preserve formatting by ending all lines with `<br>`.

    <address>
      <strong>Twitter, Inc.</strong><br>
      795 Folsom Ave, Suite 600<br>
      San Francisco, CA 94107<br>
      <abbr title="Phone">P:</abbr> (123) 456-7890
    </address>

    <address>
      <strong>Full Name</strong><br>
      <a href="mailto:#">first.last@example.com</a>
    </address>

## Blockquotes

For quoting blocks of content from another source within your document.

### Default blockquote

Wrap `<blockquote>` around any HTML as the quote. For straight quotes we recommend a `<p>`.

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

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

### Blockquote options

Style and content changes for simple variations on a standard blockquote.

#### Naming a source

Add `<small>` tag for identifying the source. Wrap the name of the source work in `<cite>`.

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

> Someone famous in Source Title

    <blockquote>
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <small>Someone famous <cite title="Source Title">Source Title</cite></small>
    </blockquote>

#### Alternate displays

Use `.pull-right` for a floated, right-aligned blockquote.

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

> Someone famous in Source Title

    <blockquote class="pull-right">
      ...
    </blockquote>

## Lists

### Unordered

A list of items in which the order does not explicitly matter.

- 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

    <ul>
      <li>...</li>
    </ul>

### Ordered

A list of items in which the order does explicitly matter.

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

    <ol>
      <li>...</li>
    </ol>

### Unstyled

Remove the default `list-style` and left padding on list items (immediate children only).

- 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

    <ul class="list-unstyled">
      <li>...</li>
    </ul>

### Inline

Place all list items on a single line with `inline-block` and some light padding.

- Lorem ipsum
- Phasellus iaculis
- Nulla volutpat

    <ul class="list-inline">
      <li>...</li>
    </ul>

### Description

A list of terms with their associated descriptions.

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.

    <dl>
      <dt>...</dt>
      <dd>...</dd>
    </dl>

#### Horizontal description

Make terms and descriptions in `<dl>` line up side-by-side.

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.
Felis euismod semper eget lacinia
  Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.

    <dl class="dl-horizontal">
      <dt>...</dt>
      <dd>...</dd>
    </dl>

##### Auto-truncating

Horizontal description lists will truncate terms that are too long to fit in the left column fix `text-overflow`. In narrower viewports, they will change to the default stacked layout.

# Grid system

## 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.

1
1
1
1
1
1
1
1
1
1
1
1
4
4
4
6
6

### Basic grid HTML

For a simple two column layout, create a `.row` and add the appropriate number of `.span*` columns. As this is a 12-column grid, each `.span*` spans 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="span4">...</div>
      <div class="span8">...</div>
    </div>

Given this example, we have `.span4` and `.span8`, 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 `.span4` over four columns.

4
4 offset 4
3 offset 3
3 offset 3
6 offset 6

    <div class="row">
      <div class="span4">...</div>
      <div class="span4 offset4">...</div>
    </div>

## Nesting columns

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

Level 1: 9 columns
Level 2: 6 columns
Level 2: 6 columns

    <div class="row">
      <div class="span9">
        Level 1: 9 columns
        <div class="row">
          <div class="span6">Level 2: 6 columns</div>
          <div class="span3">Level 2: 6 columns</div>
        </div>
      </div>
    </div>

# Code

## Inline

Wrap inline snippets of code with `<code>`.

For example, `<section>` should be wrapped as inline.

    For example, <code>&lt;section&gt;</code> should be wrapped as inline.

## Basic block

Use `<pre>` for multiple lines of code. Be sure to escape any angle brackets in the code for proper rendering.

    <p>Sample text here...</p>

    <pre>
      &lt;p&gt;Sample text here...&lt;/p&gt;
    </pre>

You may optionally add the `.pre-scrollable` class which will set a max-height of 350px and provide a y-axis scrollbar.

# Tables

## Default styles

For basic styling—light padding and only horizontal dividers—add the base class `.table` to any `<table>`.

# | First Name | Last Name | Username
--- | --- | --- | ---
1 | Mark | Otto | @mdo
2 | Jacob | Thornton | @fat
3 | Larry | the Bird | @twitter

    <table class="table">
      …
    </table>

## Optional classes

Add any of the following classes to the `.table` base class.

### `.table-striped`

Adds zebra-striping to any table row within the `<tbody>` via the `:nth-child` CSS selector (not available in IE8).

# | First Name | Last Name | Username
--- | --- | --- | ---
1 | Mark | Otto | @mdo
2 | Jacob | Thornton | @fat
3 | Larry | the Bird | @twitter

    <table class="table table-striped">
      …
    </table>

### `.table-bordered`

Add borders and rounded corners to the table.

# | First Name | Last Name | Username
--- | --- | --- | ---
1 | Mark | Otto | @mdo
Mark | Otto | @TwBootstrap
2 | Jacob | Thornton | @fat
3 | Larry the Bird | @twitter

    <table class="table table-bordered">
      …
    </table>

### `.table-hover`

Enable a hover state on table rows within a `<tbody>`.

# | First Name | Last Name | Username
--- | --- | --- | ---
1 | Mark | Otto | @mdo
2 | Jacob | Thornton | @fat
3 | Larry the Bird | @twitter

    <table class="table table-hover">
      …
    </table>

### `.table-condensed`

Makes tables more compact by cutting cell padding in half.

# | First Name | Last Name | Username
--- | --- | --- | ---
1 | Mark | Otto | @mdo
2 | Jacob | Thornton | @fat
3 | Larry the Bird | @twitter

    <table class="table table-condensed">
      …
    </table>

## Optional row classes

Use contextual classes to color table rows.

Class | Description
--- | ---
`.success` | Indicates a successful or positive action.
`.error` | Indicates a dangerous or potentially negative action.
`.warning` | Indicates a warning that might need attention.
`.info` | Used as an alternative to the default styles.

# | Product | Payment Taken | Status
--- | --- | --- | ---
1 | TB - Monthly | 01/04/2012 | Approved
2 | TB - Monthly | 02/04/2012 | Declined
3 | TB - Monthly | 03/04/2012 | Pending
4 | TB - Monthly | 04/04/2012 | Call in to confirm

    ...
      <tr class="success">
        <td>1</td>
        <td>TB - Monthly</td>
        <td>01/04/2012</td>
        <td>Approved</td>
      </tr>
    ...

## Supported table markup

List of supported table HTML elements and how they should be used.

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>
      <caption>...</caption>
      <thead>
        <tr>
          <th>...</th>
          <th>...</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td>...</td>
          <td>...</td>
        </tr>
      </tbody>
    </table>

# Forms

## Default styles

Individual form controls automatically receive some global styling. By default, inputs are set to `width: 100%;`.

Legend Label name

Example block-level help text here.

Check me out

    <form>
      <fieldset>
        <legend>Legend</legend>
        <label>Label name</label>
        <input type="text" placeholder="Type something…">
        <span class="help-block">Example block-level help text here.</span>
        <div class="checkbox">
          <label>
            <input type="checkbox"> Check me out
          </label>
        </div>
        <button type="submit" class="btn">Submit</button>
      </fieldset>
    </form>

## Optional layouts

Included with Bootstrap are optional form layouts for common use cases.

### Inline form

Add `.form-inline` for left-aligned labels and inline-block controls for a compact layout.

Remember me

    <form class="form-inline">
      <input type="text" class="span3" placeholder="Email">
      <input type="password" class="span3" placeholder="Password">
        <div class="checkbox">
          <label>
            <input type="checkbox"> Remember me
          </label>
        </div>
      <button type="submit" class="btn">Sign in</button>
    </form>

### Horizontal form

Right align labels and float them to the left to make them appear on the same line as controls. Requires the most markup changes from a default form:

- Add `.form-horizontal` to the form
- Wrap labels and controls in `.control-group`
- Add `.control-label` to the label
- Wrap any associated controls in `.controls` for proper alignment

Email
Password
Remember me

    <form class="form-horizontal">
      <div class="control-group">
        <label class="control-label" for="inputEmail">Email</label>
        <div class="controls">
          <input type="text" id="inputEmail" placeholder="Email">
        </div>
      </div>
      <div class="control-group">
        <label class="control-label" for="inputPassword">Password</label>
        <div class="controls">
          <input type="password" id="inputPassword" placeholder="Password">
        </div>
      </div>
      <div class="control-group">
        <div class="controls">
          <div class="checkbox">
            <label>
              <input type="checkbox"> Remember me
            </label>
          </div>
          <button type="submit" class="btn">Sign in</button>
        </div>
      </div>
    </form>

## Supported form controls

Examples of standard form controls supported in an example form layout.

### Inputs

Most common form control, text-based input fields. Includes support for all HTML5 types: text, password, datetime, datetime-local, date, month, time, week, number, email, url, search, tel, and color.

Requires the use of a specified `type` at all times.

    <input type="text" placeholder="Text input">

### Textarea

Form control which supports multiple lines of text. Change `rows` attribute as necessary.

    <textarea rows="3"></textarea>

### Checkboxes and radios

Checkboxes are for selecting one or several options in a list while radios are for selecting one option from many.

#### Default (stacked)

Option one is this and that—be sure to include why it's great
Option one is this and that—be sure to include why it's great
Option two can be something else and selecting it will deselect option one

    <div class="checkbox">
      <label>
        <input type="checkbox" value="">
        Option one is this and that—be sure to include why it's great
      </label>
    </div>

    <div class="radio">
      <label>
        <input type="radio" name="optionsRadios" id="optionsRadios1" value="option1" checked>
        Option one is this and that—be sure to include why it's great
      </label>
    </div>
    <div class="radio">
      <label>
        <input type="radio" name="optionsRadios" id="optionsRadios2" value="option2">
        Option two can be something else and selecting it will deselect option one
      </label>
    </div>

#### Inline checkboxes

Use `.checkbox-inline` or `.radio-inline` class to a series of checkboxes or radios for controls appear on the same line.

1 2 3

    <label class="checkbox-inline">
      <input type="checkbox" id="inlineCheckbox1" value="option1"> 1
    </label>
    <label class="checkbox-inline">
      <input type="checkbox" id="inlineCheckbox2" value="option2"> 2
    </label>
    <label class="checkbox-inline">
      <input type="checkbox" id="inlineCheckbox3" value="option3"> 3
    </label>

### Selects

Use the default option or specify a `multiple="multiple"` to show multiple options at once.

    <select>
      <option>1</option>
      <option>2</option>
      <option>3</option>
      <option>4</option>
      <option>5</option>
    </select>

    <select multiple="multiple">
      <option>1</option>
      <option>2</option>
      <option>3</option>
      <option>4</option>
      <option>5</option>
    </select>

## Extending form controls

Adding on top of existing browser controls, Bootstrap includes other useful form components.

### Input groups

Add text or buttons before, after, or on both sides of any text-based input. Use `.input-group` with a `.add-on` to prepend or append elements to an `<input>`.

Avoid using `<select>` elements here as they cannot be fully styled in WebKit browsers.

@
.00
$ .00

    <div class="input-group span9">
      <span class="input-group-addon">@</span>
      <input type="text" placeholder="Username">
    </div>

    <div class="input-group span6">
      <input type="text">
      <span class="input-group-addon">.00</span>
    </div>

    <div class="input-group span3">
      <span class="input-group-addon">$</span>
      <input type="text">
      <span class="input-group-addon">.00</span>
    </div>

#### Buttons instead of text

Buttons in input groups are a bit different and require one extra level of nesting. Instead of `.input-group-addon`, you'll need to use `.input-group-btn` to wrap the buttons. This is required due to default browser styles that cannot be overridden.

    <div class="input-group span7">
      <span class="input-group-btn">
        <button class="btn" type="button">Go!</button>
      </span>
      <input type="text">
    </div>

    <div class="input-group span7">
      <input type="text">
      <span class="input-group-btn">
        <button class="btn" type="button">Go!</button>
      </span>
    </div>

#### Button dropdowns

    <div class="input-group span7">
      <div class="input-group-btn btn-group">
        <button class="btn dropdown-toggle" data-toggle="dropdown">
          Action
          <span class="caret"></span>
        </button>
        <ul class="dropdown-menu">
          ...
        </ul>
      </div>
      <input type="text">
    </div>

    <div class="input-group span7">
      <input type="text">
      <div class="input-group-btn btn-group">
        <button class="btn dropdown-toggle" data-toggle="dropdown">
          Action
          <span class="caret"></span>
        </button>
        <ul class="dropdown-menu">
          ...
        </ul>
      </div>
    </div>

#### Segmented dropdown groups

    <div class="input-prepend">
      <div class="btn-group">...</div>
      <input type="text" class="span3">
    </div>
    <div class="input-append">
      <input type="text" class="span3">
      <div class="btn-group">...</div>
    </div>

### Control sizing

Use relative sizing classes like `.input-large` or match your inputs to the grid column sizes using `.span*` classes.

#### Relative sizing

Create larger or smaller form controls that match button sizes.

    <input class="input-large" type="text" placeholder=".input-large">
    <input class="input-small" type="text" placeholder=".input-small">
    <input class="input-mini" type="text" placeholder=".input-mini">

#### Column sizing

Use `.span1` to `.span12` for setting widths on inputs that match Bootstrap's grid system.

    <input class="span1" type="text" placeholder=".span1">
    <input class="span2" type="text" placeholder=".span2">
    <input class="span3" type="text" placeholder=".span3">
    <select class="span1">
      ...
    </select>
    <select class="span2">
      ...
    </select>
    <select class="span3">
      ...
    </select>

If you need multiple inputs on the same line, wrap them in the standard grid markup (with `.row` and `.span*` classes). Each input should have it's own column and will expand to fill the available width automatically.

    <div class="row">
      <div class="span4">
        <input type="text" placeholder=".span4">
      </div>
      <div class="span4">
        <input type="text" placeholder=".span4">
      </div>
      <div class="span4">
        <input type="text" placeholder=".span4">
      </div>
    </div>

### Uneditable inputs

Present data in a form that's not editable without using actual form markup.

Some value here

    <span class="input-xlarge uneditable-input">Some value here</span>

### Form actions

End a form with a group of actions (buttons). When placed within a `.form-horizontal`, the buttons will automatically indent to line up with the form controls.

    <div class="form-actions">
      <button type="submit" class="btn btn-primary">Save changes</button>
      <button type="button" class="btn">Cancel</button>
    </div>

### Help text

Inline and block level support for help text that appears around form controls.

#### Inline help

Inline help text

    <input type="text"><span class="help-inline">Inline help text</span>

#### Block help

A longer block of help text that breaks onto a new line and may extend beyond one line.

    <input type="text"><span class="help-block">A longer block of help text that breaks onto a new line and may extend beyond one line.</span>

## Form control states

Provide feedback to users or visitors with basic feedback states on form controls and labels.

### Input focus

We remove the default `outline` styles on some form controls and apply a `box-shadow` in its place for `:focus`.

    <input class="input-xlarge" id="focusedInput" type="text" value="This is focused...">

### Invalid inputs

Style inputs via default browser functionality with `:invalid`. Specify a `type`, add the `required` attribute if the field is not optional, and (if applicable) specify a `pattern`.

    <input class="span3" type="email" required>

### Disabled inputs

Add the `disabled` attribute on an input to prevent user input and trigger a slightly different look.

    <input class="input-xlarge" id="disabledInput" type="text" placeholder="Disabled input here..." disabled>

### Disabled fieldsets

Add the `disabled` attribute to a `<fieldset>` to disable all the controls within the `<fieldset>` at once. Link buttons (with the `<a>` element) will be aesthetically disabled, but you will need custom JavaScript to disable their behavior.

Can't check this

    <form class="form-inline">
      <fieldset disabled>
        <input type="text" class="span4" placeholder="Disabled input">
        <select class="span4">
          <option>Disabled select</option>
        </select>
        <div class="checkbox">
          <label>
            <input type="checkbox"> Can't check this
          </label>
        </div>
        <button type="submit" class="btn btn-primary">Submit</button>
      </fieldset>
    </form>

### Validation states

Bootstrap includes validation styles for error, warning, info, and success messages. To use:

- Add `.has-warning`, `.has-error`, or `.has-success` to the parent element
- Add .input-with-feedback to the field(s) in question

Validation styles are applied on a per-input basis. With horizontal forms, the `<label class="control-label">` will always be styled.

Input with warning
Input with error
Input with success

    <div class="control-group has-warning">
      <label class="control-label" for="inputWarning">Input with warning</label>
      <div class="controls">
        <input type="text" class="input-with-feedback" id="inputWarning">
      </div>
    </div>
    <div class="control-group has-error">
      <label class="control-label" for="inputError">Input with error</label>
      <div class="controls">
        <input type="text" class="input-with-feedback" id="inputError">
      </div>
    </div>
    <div class="control-group has-success">
      <label class="control-label" for="inputSuccess">Input with success</label>
      <div class="controls">
        <input type="text" class="input-with-feedback id="inputSuccess"">
      </div>
    </div>

# Buttons

## Default buttons

Button styles can be applied to anything with the `.btn` class applied. However, typically you'll want to apply these to only `<a>` and `<button>` elements for the best rendering.

Button | class="" | Description
--- | --- | ---
| `btn` | Standard gray button with gradient
| `btn btn-primary` | Provides extra visual weight and identifies the primary action in a set of buttons
| `btn btn-success` | Indicates a successful or positive action
| `btn btn-warning` | Indicates caution should be taken with this action
| `btn btn-danger` | Indicates a dangerous or potentially negative action
| `btn btn-link` | Deemphasize a button by making it look like a link while maintaining button behavior

#### Cross browser compatibility

IE9 doesn't crop background gradients on rounded corners, so we remove it. Related, IE9 jankifies disabled `button` elements, rendering text gray with a nasty text-shadow that we cannot fix.

## Button sizes

Fancy larger or smaller buttons? Add `.btn-large`, `.btn-small`, or `.btn-mini` for additional sizes.

    <p>
      <button class="btn btn-large btn-primary" type="button">Large button</button>
      <button class="btn btn-large" type="button">Large button</button>
    </p>
    <p>
      <button class="btn btn-primary" type="button">Default button</button>
      <button class="btn" type="button">Default button</button>
    </p>
    <p>
      <button class="btn btn-small btn-primary" type="button">Small button</button>
      <button class="btn btn-small" type="button">Small button</button>
    </p>
    <p>
      <button class="btn btn-mini btn-primary" type="button">Mini button</button>
      <button class="btn btn-mini" type="button">Mini button</button>
    </p>

Create block level buttons—those that span the full width of a parent— by adding `.btn-block`.

    <button class="btn btn-large btn-block btn-primary" type="button">Block level button</button>
    <button class="btn btn-large btn-block" type="button">Block level button</button>

## Disabled state

Make buttons look unclickable by fading them back 50%.

### Anchor element

Add the `.disabled` class to `<a>` buttons.

Primary link Link

    <a href="#" class="btn btn-large btn-primary disabled">Primary link</a>
    <a href="#" class="btn btn-large disabled">Link</a>

We use `.disabled` as a utility class here, similar to the common `.active` class, so no prefix is required. Also, this class is only for aesthetic; you must use custom JavaScript to disable links here.

### Button element

Add the `disabled` attribute to `<button>` buttons.

    <button type="button" class="btn btn-large btn-primary disabled" disabled="disabled">Primary button</button>
    <button type="button" class="btn btn-large" disabled>Button</button>

## One class, multiple tags

Use the `.btn` class on an `<a>`, `<button>`, or `<input>` element.

Link

    <a class="btn" href="">Link</a>
    <button class="btn" type="submit">Button</button>
    <input class="btn" type="button" value="Input">
    <input class="btn" type="submit" value="Submit">

As a best practice, try to match the element for your context to ensure matching cross-browser rendering. If you have an `input`, use an `<input type="submit">` for your button.

# Images

Add classes to an `<img>` element to easily style images in any project. Rounded corners are not available in IE8.

    <img src="..." class="img-rounded">
    <img src="..." class="img-circle">
    <img src="..." class="img-polaroid">

# Icons font by Glyphicons

## Included glyphs

Bootstrap comes with all 160 of Glyphicons Halflings set, all available in font formats for easy coloring, sizing, and placement.

- glyphicon-glass
- glyphicon-music
- glyphicon-search
- glyphicon-envelope
- glyphicon-heart
- glyphicon-star
- glyphicon-star-empty
- glyphicon-user
- glyphicon-film
- glyphicon-th-large
- glyphicon-th
- glyphicon-th-list
- glyphicon-ok
- glyphicon-remove
- glyphicon-zoom-in
- glyphicon-zoom-out
- glyphicon-off
- glyphicon-signal
- glyphicon-cog
- glyphicon-trash
- glyphicon-home
- glyphicon-file
- glyphicon-time
- glyphicon-road
- glyphicon-download-alt
- glyphicon-download
- glyphicon-upload
- glyphicon-inbox
- glyphicon-play-circle
- glyphicon-repeat
- glyphicon-refresh
- glyphicon-list-alt
- glyphicon-lock
- glyphicon-flag
- glyphicon-headphones
- glyphicon-volume-off
- glyphicon-volume-down
- glyphicon-volume-up
- glyphicon-qrcode
- glyphicon-barcode
- glyphicon-tag
- glyphicon-tags
- glyphicon-book
- glyphicon-bookmark
- glyphicon-print
- glyphicon-camera
- glyphicon-font
- glyphicon-bold
- glyphicon-italic
- glyphicon-text-height
- glyphicon-text-width
- glyphicon-align-left
- glyphicon-align-center
- glyphicon-align-right
- glyphicon-align-justify
- glyphicon-list
- glyphicon-indent-left
- glyphicon-indent-right
- glyphicon-facetime-video
- glyphicon-picture
- glyphicon-pencil
- glyphicon-map-marker
- glyphicon-adjust
- glyphicon-tint
- glyphicon-edit
- glyphicon-share
- glyphicon-check
- glyphicon-move
- glyphicon-step-backward
- glyphicon-fast-backward
- glyphicon-backward
- glyphicon-play
- glyphicon-pause
- glyphicon-stop
- glyphicon-forward
- glyphicon-fast-forward
- glyphicon-step-forward
- glyphicon-eject
- glyphicon-chevron-left
- glyphicon-chevron-right
- glyphicon-plus-sign
- glyphicon-minus-sign
- glyphicon-remove-sign
- glyphicon-ok-sign
- glyphicon-question-sign
- glyphicon-info-sign
- glyphicon-screenshot
- glyphicon-remove-circle
- glyphicon-ok-circle
- glyphicon-ban-circle
- glyphicon-arrow-left
- glyphicon-arrow-right
- glyphicon-arrow-up
- glyphicon-arrow-down
- glyphicon-share-alt
- glyphicon-resize-full
- glyphicon-resize-small
- glyphicon-plus
- glyphicon-minus
- glyphicon-asterisk
- glyphicon-exclamation-sign
- glyphicon-gift
- glyphicon-leaf
- glyphicon-fire
- glyphicon-eye-open
- glyphicon-eye-close
- glyphicon-warning-sign
- glyphicon-plane
- glyphicon-calendar
- glyphicon-random
- glyphicon-comment
- glyphicon-magnet
- glyphicon-chevron-up
- glyphicon-chevron-down
- glyphicon-retweet
- glyphicon-shopping-cart
- glyphicon-folder-close
- glyphicon-folder-open
- glyphicon-resize-vertical
- glyphicon-resize-horizontal
- glyphicon-hdd
- glyphicon-bullhorn
- glyphicon-bell
- glyphicon-certificate
- glyphicon-thumbs-up
- glyphicon-thumbs-down
- glyphicon-hand-right
- glyphicon-hand-left
- glyphicon-hand-up
- glyphicon-hand-down
- glyphicon-circle-arrow-right
- glyphicon-circle-arrow-left
- glyphicon-circle-arrow-up
- glyphicon-circle-arrow-down
- glyphicon-globe
- glyphicon-wrench
- glyphicon-tasks
- glyphicon-filter
- glyphicon-briefcase
- glyphicon-fullscreen
- glyphicon-dashboard
- glyphicon-paperclip
- glyphicon-heart-empty
- glyphicon-link
- glyphicon-phone
- glyphicon-pushpin
- glyphicon-euro
- glyphicon-usd
- glyphicon-gbp
- glyphicon-sort
- glyphicon-sort-by-alphabet
- glyphicon-sort-by-alphabet-alt
- glyphicon-sort-by-order
- glyphicon-sort-by-order-alt
- glyphicon-sort-by-attributes
- glyphicon-sort-by-attributes-alt
- glyphicon-unchecked
- glyphicon-expand
- glyphicon-collapse
- glyphicon-collapse-top

### Glyphicons attribution

Glyphicons Halflings are normally not available for free, but an arrangement between Bootstrap and the Glyphicons creator have made this possible at no cost to you as developers. As a thank you, we ask you to include an optional link back to Glyphicons whenever practical.

## How to use

Add the appropriate class to any inline element. All icon classes are prefixed with `glyphicon-` for easy styling. To use, place the following code just about anywhere:

    <i class="glyphicon-search"></i>

Want to change the icon color? Just change the `color` of the parent element.

When using beside strings of text, as in buttons or nav links, be sure to leave a space after the icon for proper spacing.

## Icon examples

Use them in buttons, button groups for a toolbar, navigation, or prepended form inputs.

#### Buttons

##### Button group in a button toolbar

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

        <a class="btn" href="#"><i class="glyphicon-align-left"></i></a>
        <a class="btn" href="#"><i class="glyphicon-align-center"></i></a>
        <a class="btn" href="#"><i class="glyphicon-align-right"></i></a>
        <a class="btn" href="#"><i class="glyphicon-align-justify"></i></a>
      </div>
    </div>

##### Dropdown in a button group

User

    <div class="btn-group">
      <a class="btn btn-primary" href="#"><i class="glyphicon-user icon-white"></i> User</a>
      <a class="btn btn-primary dropdown-toggle" data-toggle="dropdown" href="#"><span class="caret"></span></a>
      <ul class="dropdown-menu">
        <li><a href="#"><i class="glyphicon-pencil"></i> Edit</a></li>
        <li><a href="#"><i class="glyphicon-trash"></i> Delete</a></li>
        <li><a href="#"><i class="glyphicon-ban-circle"></i> Ban</a></li>
        <li class="divider"></li>
        <li><a href="#"><i class="i"></i> Make admin</a></li>
      </ul>
    </div>

##### Large button

Star

    <a class="btn btn-large" href="#"><i class="icon-star"></i> Star</a>

##### Small button

    <a class="btn btn-small" href="#"><i class="glyphicon-star"></i></a>

#### Navigation

    <ul class="nav nav-list">
      <li class="active"><a href="#"><i class="glyphicon-home icon-white"></i> Home</a></li>
      <li><a href="#"><i class="glyphicon-book"></i> Library</a></li>
      <li><a href="#"><i class="glyphicon-pencil"></i> Applications</a></li>
      <li><a href="#"><i class="i"></i> Misc</a></li>
    </ul>

#### Form fields

Email address

    <div class="control-group">
      <label class="control-label" for="inputIcon">Email address</label>
      <div class="controls">
        <div class="input-prepend">
          <span class="add-on"><i class="glyphicon-envelope"></i></span>
          <input class="span2" id="inputIcon" type="text">
        </div>
      </div>
    </div>

# Responsive design

## Enabling responsive features

Responsive CSS requires the following meta tag in the `<head>` of your pages.

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

### Supported devices

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

Label | Layout width | Column width | Gutter width
--- | --- | --- | ---
Large display | 1200px and up | 70px | 30px
Default | 980px and up | 60px | 20px
Portrait tablets | 768px and above | 42px | 20px
Phones to tablets | 767px and below | Fluid columns, no fixed widths
Phones | 480px and below | Fluid columns, no fixed widths

    /* 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).

Class | Phones 767px and below | Tablets 979px to 768px | Desktops Default
--- | --- | --- | ---
`.visible-phone` | Visible | Hidden | Hidden
`.visible-tablet` | Hidden | Visible | Hidden
`.visible-desktop` | Hidden | Hidden | Visible
`.hidden-phone` | Hidden | Visible | Visible
`.hidden-tablet` | Visible | Hidden | Visible
`.hidden-desktop` | Visible | Visible | Hidden

### 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