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 class="dropdown-item" tabindex="-1" href="#">Action</a></li>
  <li><a class="dropdown-item" tabindex="-1" href="#">Another action</a></li>
  <li><a class="dropdown-item" tabindex="-1" href="#">Something else here</a></li>
  <li class="dropdown-divider"></li>
  <li><a class="dropdown-item" 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 class="dropdown-item" tabindex="-1" href="#">Action</a></li>
    <li><a class="dropdown-item" tabindex="-1" href="#">Another action</a></li>
    <li><a class="dropdown-item" tabindex="-1" href="#">Something else here</a></li>
    <li class="dropdown-divider"></li>
    <li><a class="dropdown-item" 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>

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">Center</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 btn-default dropdown-toggle" data-toggle="dropdown" href="#">
    Action
  </a>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Works with all button sizes

Button dropdowns work at any size: .btn-lg, or .btn-sm.

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"></button>
  <ul class="dropdown-menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Sizes

Utilize the extra button classes .btn-xs, .btn-sm, or .btn-lg for sizing.

<div class="btn-group">
  <button class="btn btn-default btn-xs">Action</button>
  <button class="btn btn-default btn-xs dropdown-toggle" data-toggle="dropdown"></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 btn-default">Dropup</button>
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown"></button>
  <ul class="dropdown-menu" role="menu">
    <!-- dropdown menu links -->
  </ul>
</div>

Cards

Bootstrap’s cards provide a flexible and extensible content container with multiple variants and options.

Simple Card

Card title

Card subtitle

With supporting text below as a natural lead-in to additional content.

Card Link

Cancel Submit

Radio buttons

Radio buttons as in buttons.

         add(new BooleanRadioGroup("boolean", new Model<>(Boolean.FALSE)));
        

Boolean radio buttons with AJAX: the selected value is true

Enum based radio buttons with AJAX: the selected value is submitted

Lightweight defaults Same markup, different classes

All nav components here—tabs, pills, and lists—share the same base markup and styles through the .nav, .nav-item and .nav-link classes.

The base .nav component does not include any .active state. The following examples include the class, mainly to demonstrate that this particular class does not trigger any special styling.

Basic tabs

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

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

Basic pills

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

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

Component alignment

Change the horizontal alignment of your nav with .justify-content-center and .justify-content-end classes. By default, navs are left-aligned, but you can easily change them to center or right aligned

• Active
• Link
• Link
• Disabled

<ul class="nav justify-content-end">
    <li class="nav-item">
        <a class="nav-link active" href="#">Active</a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
    </li>
</ul>

Stackable

As tabs and pills are horizontal by default, just add a second class, .flex-column, to make them appear vertically stacked. Need to stack them on some viewports but not others? Use the responsive versions (e.g., .flex-sm-column).

Stacked tabs

<ul class="nav nav-tabs .flex-column">
  ...
</ul>

Stacked pills

<ul class="nav nav-pills .flex-column">
  ...
</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="nav-item dropdown">
    <a class="nav-link dropdown-toggle"
       data-toggle="dropdown"
       href="#">
        Dropdown
      </a>
    <ul class="dropdown-menu">
      <!-- links -->
    </ul>
  </li>
</ul>

Pills with dropdowns

<ul class="nav nav-pills">
  <li class="nav-item dropdown">
    <a class="nav-link dropdown-toggle"
       data-toggle="dropdown"
       href="#">
        Dropdown
      </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":

<ul class="nav flex-column">
  <li class="nav-item">List header</li>
  <li class="nav-item"><a class="nav-link active" href="#">Home</a></li>
  <li class="nav-item"><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 .dropdown-divider, like so:

<ul class="nav flex-column">
  ...
  <li class="dropdown-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>

Same example but no AJAX: just panel flipping at client side:

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 navbar-light navbar-expand-lg">
    <a class="navbar-brand" href="#">Title</a>
    <div class="collapse navbar-collapse">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active"><a class="nav-link" href="#">Home</a></li>
          <li class="nav-item"><a class="nav-link" href="#">Link</a></li>
          <li class="nav-item"><a class="nav-link" href="#">Link</a></li>
        </ul>
  </div>
</div>

Navbar components

Brand

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

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

Nav links

Nav items are simple to add via unordered lists.

<ul class="navbar-nav">
  <li class="nav-item">
    <a class="nav-link active" href="#">Home</a>
  </li>
  <li class="nav-item"><a class="nav-link" href="#">Link</a></li>
  <li class="nav-item"><a class="nav-link" href="#">Link</a></li>
</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="form-inline pull-left">
  <input type="text" class="form-control">
  <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="form-inline 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="nav-item dropdown">
    <a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">
      Account
    </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 types

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

Fixed to top

Add .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-light navbar-expand-lg fixed-top">
  ...
</div>

Fixed to bottom

Add .fixed-bottom instead.

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

Sticky top navbar

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

<div class="navbar navbar-light navbar-expand-lg sticky-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, .navbar-toggle.

<div class="navbar">

      <!-- .navbar-toggle is used as the toggle for collapsed navbar content -->
      <a class="btn navbar-toggler" data-toggle="collapse" data-target=".navbar-collapse"></a>

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

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

</div>

Inverted type

Modify the look of the navbar by adding .navbar-dark and background utility class.

<div class="navbar navbar-expand-lg navbar-dark bg-dark">
  ...
</div>

Examples

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

<nav>
    <ul class="breadcrumb">
      <li class="breadcrumb-item"><a href="#">Home</a></li>
      <li class="breadcrumb-item"><a href="#">Library</a></li>
      <li class="breadcrumb-item active">Data</li>
    </ul>
</nav>

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.

<ul class="pagination">
<li class="page-item" ><a class="page-link" href="#">Prev</a></li>
<li class="page-item" ><a class="page-link" href="#">1</a></li>
<li class="page-item" ><a class="page-link" href="#">2</a></li>
<li class="page-item" ><a class="page-link" href="#">3</a></li>
<li class="page-item" ><a class="page-link" href="#">4</a></li>
<li class="page-item" ><a class="page-link" href="#">Next</a></li>
</ul>

Options

Disabled and active states

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

<ul class="pagination">
  <li class="page-item disabled"><a class="page-link" href="#">Prev</a></li>
  <li class="page-item active"><a class="page-link" href="#">1</a></li>
  ...
</ul>

You can optionally swap out active or disabled anchors for spans to remove click functionality while retaining intended styles.

<ul class="pagination">
  <li class="page-item disabled"><span class="page-link">Prev</span></li>
  <li class="page-item active"><span class="page-link">1</span></li>
  ...
</ul>

Sizes

Fancy larger or smaller pagination? Add .pagination-lg or .pagination-sm for additional sizes.

<div>
  <ul class="pagination pagination-lg">
    ...
  </ul>
</div>
<div>
  <ul class="pagination">
    ...
  </ul>
</div>
<div>
  <ul class="pagination pagination-sm">
    ...
  </ul>
</div>

Pills

Use the .badge-pill modifier class to make badges more rounded (with a larger border-radius and additional horizontal padding). Useful if you miss the badges from v3.

            <button wicket:id="badge-button">
                Submit <span wicket:id="button-count"></span>
                <span class="sr-only">unread messages</span>
            </button>
        

Hero unit

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

<div class="jumbotron">
  <h1>Heading</h1>
  <p>Tagline</p>
  <p>
    <a class="btn btn-primary btn-lg">
      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="pb-2 mt-4 mb-2 border-bottom">
  <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.

Thumbnail label

Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.

Action Action

Thumbnail label

Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.

Action Action

Thumbnail label

Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.

Action Action

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-lg-2 or .col-lg-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-lg-4">
    <a href="#" class="thumbnail">
      <img src="http://placehold.it/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-lg-4">
    <div class="thumbnail">
      <img src="http://placehold.it/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 alert-warning">
  <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

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

Striped

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

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

Animated

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

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

Labeled

Use Stack#labeled(true) to show the stack's label.

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

Stacked

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

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

Options

Additional colors

Progress bars use background color utility classes for consistent styles.

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

Striped bars

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

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

Updatable bars

A ProgressBar with self updating Ajax behavior.

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="media-left" href="#">
    <img class="media-object" src="http://placehold.it/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="media-left" href="#">
      <img class="media-object" src="http://placehold.it/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-lg">
  ...
</div>

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

Close icon

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

<button class="close">&times;</button>

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

<a class="close" href="#">&times;</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;
}

.text-muted

Change an element's color to #999

class="text-muted"

.text-muted {
  color: #999;
}

.clearfix

Clear the float on any element

class="clearfix"

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